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“For a long time, people have known that chemical pollution is a bad thing. But they haven’t been thinking about it at the global level. This work brings chemical pollution, especially plastics, into the story of how people are changing the planet.”

a huge number of chemical compounds registered for use – about 350,000 – and only a tiny fraction of these have been assessed for safety.

the total mass of plastics now exceeds the total mass of all living mammals

“Shifting to a circular economy is really important. That means changing materials and products so they can be reused, not wasted.”

There are growing calls for international action on chemicals and plastics, including the establishment of a global scientific body for chemical pollution akin to the Intergovernmental Panel on Climate Change.

“The rise of the chemical burden in the environment is diffuse and insidious. Even if the toxic effects of individual chemicals can be hard to detect, this does not mean that the aggregate effect is likely to be insignificant.“Regulation is not designed to detect or understand these effects. We are relatively blind to what is going on as a result. In this situation, where we have a low level of scientific certainty about effects, there is a need for a much more precautionary approach to new chemicals and to the amount being emitted to the environment.”

The chemical pollution planetary boundary is the fifth of nine that scientists say have been crossed, with the others being global heating, the destruction of wild habitats, loss of biodiversity and excessive nitrogen and phosphorus pollution.

a wide array of initiatives have emerged as a direct response to China’s Belt and Road to undermine and dilute China’s infrastructural prowess: the U.S. International Finance and Development Corporation, the EU’s “Asia Connectivity Initiative,” the EU-Japan “Partnership on Sustainable Connectivity and Quality Infrastructure,” the U.S.-Japan-Australia “Blue Dot Network,” the India-Japan “connectivity corridors” and myriad other coalitions. None of these existed even three years ago. Roads have always been the pathways of conquest; now they are the battlefield of competitive connectivity. 

A repeat of the Cold War would surely not play out as favorably for the U.S. as the last one. America is politically polarized and is the world’s largest debtor nation. Its most recent major wars have been disasters and its military needs time to rebuild and adjust to new adversaries and tactics. And many of its erstwhile allies from Europe to Asia are far more vested in China than America is and don’t trust it to lead a consensus-based global coalition.

Bogging down the adversary while moving stealthily towards one’s objective has been an axiom of Chinese diplomacy for generations. But there is little stealth anymore in China’s land grabs, island-building and wolf-warrior diplomacy

With China’s suppression of information about the coronavirus painting it into a corner, Beijing no longer feels it has anything to lose and is going for broke: moving on Taiwan, Hong Kong, the Senkaku Islands, India’s borders and other disputes while the rest of the world is off-kilter, girding itself for a new Cold War with America. China’s leadership has convinced itself that West-leaning powers seek to encircle it militarily, splinter it internally and destabilize the Communist Party. This is the classical psychological spiral at the heart of any security dilemma in which each action taken by one side elevates the perceived insecurity of the other. 

in dozens of visits to Beijing, I have found my interlocutors unable to grasp this basic psychological fact. While many societies admire China’s success and are grateful for China’s role in their development, none want to be like China, nor be subservient to it. It’s an argument that’s fallen on deaf ears in Washington, too. And as with America’s experience of benevolent nation-building, China’s policy of intimidating neighbors into feebly muting their own interests has predictably backfired

American strategists have been far more fixated on China’s presence in Africa and South America rather than developing a comprehensive strategy for reassuring China’s neighbors and supporting their own efforts to stand up to it.

What the U.S. and Europe do have in their favor is that they are territorially secure while China is not. China has 14 neighbors, all of which harbor deep suspicions of its motives even as many (especially Russia) cooperate with it.

Despite the immense economic leverage China has accrued vis-a-vis the many states along its perimeter, it is the complexity of having so many neighbors that constrains China more than its increasingly sophisticated military arsenal suggests. Maintaining global influence is much harder when you are fighting a 14-front war in your own neighborhood. 

From Malabar to Pearl Harbor, the U.S., Japan, Australia, India and numerous other countries have been deepening their coordination in the Indo-Pacific maritime domain. The “quad” coalition features joint strategic patrols and hardware support for the navies of Vietnam, the Philippines and Indonesia in the South China Sea. This summer, ASEAN foreign ministers finally graduated from their usually limp communiques watered down by Chinese pressure and reaffirmed that the U.N. Convention on the Law of the Sea must be the basis for arbitrating maritime disputes. 

Boundary agreements are rarely perceived as fair by both sides, yet such settlements have the virtue of enabling counties to mature towards functional cooperation.  

Precisely because the U.S. and EU have imposed such stiff restrictions on Chinese investment, China has redirected its outbound capital portfolio ever more towards its more proximate Asian domain. And in the wake of the COVID-19 crisis, once fast-growing countries face capital outflows and weak global demand amid ruptured supply chains. The West may be squeezing China out of some markets, but China’s balloon is inflating across Asia as it lowers tariffs on all its Belt and Road trading partners

Laos and Cambodia, two of Asia’s poorest countries, have become all but wholly owned subsidiaries of China, even as China’s Mekong River dams have ravaged their agriculture through volatile water flows and chemical pesticides. With stronger technical and diplomatic assistance, these countries could demand that Chinese investments reinforce their sustainability and local businesses. 

It was always going to be an uphill battle for China to be perceived as a benevolent superpower. Unlike America or the European Union, China is wholly unconvincing as a multiethnic empire. It systematically squelches diverse identities rather than elevating them. Furthermore, though China is an ancient and rich civilization, it coexists with other Asian civilizations with equally respectable glory. None will ever bow to the others, as Japan learned the hard way in the 20th century. Every time China gains an inch of territory, it loses a yard of credibility. The essence of geopolitical stability is equilibrium, and the pathway to it follows the logic of reciprocity. 

China’s assertiveness signals neither an inevitable new Cold War nor a new unipolar hegemony. Rather, it is one phase in Asia’s collective story and the global shift towards multipolarity.

Never has Eurasia been ruled by a single hegemon. The Mongols came closest 700 years ago, but the 14th-century Black Death fractured its disparate khanates, and the Silk Road fell idle. Today again, a pandemic has emerged from China, but rather than shut down the Silk Road, we should build many more of them among dozens of Eurasian nations rather than in and out of China alone. All roads need not lead to Beijing.

Our analysis confirms that unequal exchange is a significant driver of global inequality, uneven development, and ecological breakdown.

Today, we are told, the world economy functions as a meritocracy: countries that have strong institutions, good markets, and a steadfast work ethic become rich and successful, while countries that lack these things, or which are hobbled by corruption and bad governance, remain poor. This assumption underpins dominant perspectives in the field of international development (Sachs, 2005, Collier, 2007, Rostow, 1990, Moyo, 2010, Calderisi, 2007, Acemoglu and Robinson, 2012), and is reinforced by the rhetoric, common among neoclassical economists, that free-trade globalization has created an “even playing field”.

Emmanuel and Amin argued that unequal exchange enables a “hidden transfer of value” from the global South to the global North, or from periphery to core, which takes place subtly and almost invisibly, without the overt coercion of the colonial apparatus and therefore without provoking moral outrage. Prices are naturalized on the grounds that they represent “utility”, or “value”, or the outcome of “market mechanisms” such as supply and demand, obscuring the extent to which they are determined by power imbalances in the global political economy. Price differentials in international trade therefore function as an effective method of maintaining the patterns of appropriation that once overtly defined the colonial economy, allowing blame for “underdevelopment” to be shifted onto the victims.

Historians have demonstrated that the rise of Western Europe depended in large part on natural resources and labour forcibly appropriated from the global South during the colonial period, on a vast scale. Spain extracted gold and silver from the Andes, Portugal extracted sugar from Brazil, France extracted fossil fuels, minerals and agricultural products from West Africa, Belgium extracted rubber from the Congo; and Britain extracted cotton, opium, grain, timber, tea and countless other commodities from its colonies around the world – all of which entailed the exploitation of Southern labour on coercive terms, including through mass enslavement and indenture. This pattern of appropriation was central to Europe’s industrial growth, and to financing the expansion and industrialization of European settler colonies, including Canada, Australia, New Zealand and the United States, which went on to develop similarly imperialist orientations toward the South (e.g., Naoroji, 1902, Pomeranz, 2000, Beckert, 2015, Moore, 2015, Bhambra, 2017, Patnaik, 2018, Davis, 2002).

for every unit of embodied resources and labour that the South imports from the North they have to export many more units to pay for it, enabling the North to achieve a net appropriation through trade. This dynamic was theorized by Emmanuel (1972) and Amin (1978) as a process of “unequal exchange”.Emmanuel and Amin argued that unequal exchange enables a “hidden transfer of value” from the global South to the global North, or from periphery to core, which takes place subtly and almost invisibly, without the overt coercion of the colonial apparatus and therefore without provoking moral outrage. Prices are naturalized on the grounds that they represent “utility”, or “value”, or the outcome of “market mechanisms” such as supply and demand, obscuring the extent to which they are determined by power imbalances in the global political economy. Price differentials in international trade therefore function as an effective method of maintaining the patterns of appropriation that once overtly defined the colonial economy, allowing blame for “underdevelopment” to be shifted onto the victims.

Following Dorninger et al. (2021), we use a “footprint” analysis of input–output data to quantify the physical scale of raw materials, land, energy and labour embodied in trade between the North and South, looking not only at traded goods themselves but also the upstream resources and labour that go into producing and transporting those goods, including the machines, factories, infrastructure, etc.

Grounding our analysis in the physical dimensions of unequal exchange is important for several reasons. First, these resources – raw materials, land, labour and energy – embody the productive potential that is required for meeting human needs (use-value) and for generating economic growth (exchange-value). Physical drain is therefore ultimately what drives global inequalities in terms of access to provisions, as well as in terms of GDP or income (see Hornborg, 2020). Second, this approach allows us to maintain sight of the ecological impacts of unequal exchange. We know that excess energy and material consumption in high-income nations, facilitated by appropriation from the rest of the world, is causing ecological breakdown on a global scale. Tracing flows of resources embodied in trade allows us to determine the extent to which Northern appropriation is responsible for ecological impacts in the South; i.e., ecological debt (Roberts and Parks, 2009, Warlenius et al., 2015, Hornborg and Martinez-Alier, 2016).

Due to the growing fragmentation of international commodity chains, monetary databases on bilateral gross trade flows have been criticised for not accurately depicting the monetary interdependencies between national economies (Johnson and Noguera, 2012), i.e., the amount of a countries’ value added that is induced by foreign final demand and international trade relations. Trade in Value Added (TiVA) indicators Johnson and Noguera, 2012, Timmer et al., 2014 are designed to take into account the complexity of the global economy. The TiVA concept is motivated by the fact that, in monetary terms, trade in intermediates accounts for approximately two-thirds of international trade. Imports (of intermediates) are used to produce exports and hence bilateral gross exports may include inputs (i.e., value added) from third party countries (Stehrer, 2012). TiVA reveals where (e.g., in which country or industry) and how (e.g. by capital or labour) value is added or captured in global commodity chains (Timmer et al., 2014).

TiVA, which is sometimes referred to as the “value footprint”, is the monetary counterpart of the MRIO-based environmental footprint because both indicators follow the same system boundaries, i.e., all supply chains between production and final consumption of two countries including all direct and indirect interlinkages. Moreover, in contrast to global bilateral monetary trade flows, TiVA is globally balanced, meaning that national exports and imports globally sum up to zero. This is an important feature of the TiVA indicator that facilitates more consistent and unambiguous assessments.

for every unit of embodied raw material equivalent that the South imports from the North, they have to export on average five units to “pay” for it

For land the average ratio is also 5:1, for energy it is 3:1, and for labour it is 13:1

Table 1. Resource drain from the South.ResourceNorth → South flows 2015South → North flows 2015Drain from South in 2015Cumulative drain from South 1990–2015Raw material equivalents [Gt]3.3715.3912.02254.40Embodied land [mn ha]527.421,349.01821.5932,987.23Embodied energy [EJ]21.5543.5121.06650.34Embodied labour [mn py-eq]31.11219.22188.125,956.62

in the year 2015 the North’s net appropriation from the South totalled 12 billion tons of raw materials, 822 million hectares of land, 21 exajoules of energy (equivalent to 3.4 billion barrels of oil), and 188 million person-years equivalents of labour (equivalent to 392 billion hours of work). By net appropriation we mean that these resources are not compensated in equivalent terms through trade; they are effectively transferred gratis. And this appropriation is not insignificant in scale; on the contrary, it comprises a large share (on average about a quarter) of the North’s total consumption.

significant consequences for the global South, in terms of lost use-value. This quantity of Southern raw materials, land, energy and labour could be used to provision for human needs and develop sovereign industrial capacity in the South, but instead it is mobilized around servicing consumption in the global North.

Eight hundred and twenty-two million hectares of land, which is twice the size of India, would in theory be enough to provide nutritious food for up to 6 billion people, depending on land productivity and diet composition

material use is tightly linked to environmental pressures. It accounts for more than 90% of variation in environmental damage indicators (Steinmann et al., 2017), and more than 90% of biodiversity loss and water stress (International Resource Panel, 2019). Moreover, as Van der Voet et al. (2004) demonstrate, while impacts vary by material, and vary as technologies change, there is a coupling between aggregate mass flows and ecological impact. Net flows of material resources from South to North mean that much of the impact of material consumption in the North (43% of it, net of trade) is suffered in the South. The damage is offshored.

Industrial ecologists hold that global extraction and use of materials should not exceed 50 billion tons per year (Bringezu, 2015). In 2015, the global economy was using 87 billion tons per year, overshooting the boundary by 74% and driving ecological breakdown. This overshoot is due almost entirely to excess resource consumption in global North countries. The North consumed 26.71 tons of materials per capita in 2015, which is roughly four times over the sustainable threshold (6.80 tons per capita in 2015). Our results indicate that most of the North’s excess consumption (58% of it) is sustained by net appropriation from the global South; without this appropriation, material use in high-income nations would be much closer to the sustainable level.

In consumption-based terms, the North is responsible for 92% of carbon dioxide emissions in excess of the planetary boundary (350 ppm atmospheric concentration of CO2) (Hickel, 2020), while the consequences harm the South disproportionately, inflicting dramatic social and economic costs (Kikstra et al., 2021b, Srinivasan et al., 2008). The South suffers 82–92% of the costs of climate change, and 98–99% of the deaths associated with climate change (DARA, 2012)

Net appropriation of land means soil depletion, water depletion, and chemical runoff are offshored; net appropriation of energy means that the health impacts of particulate pollution are offshored; net appropriation of labour means that the negative social impacts of exploitation are offshored, etc (Wiedmann and Lenzen, 2018). In the case of non-renewable resources there is also a problem of depletion: resources appropriated from the South are no longer available for future generations to use (Costanza and Daly, 1992, World Bank, 2018), which is particularly problematic given that under conditions of net appropriation economic losses are not offset by investments in capital stock (cf. Hartwick, 1977). Finally, the extractivism that underpins resource appropriation generates social dislocations and conflicts at resource frontiers (Martinez-Alier, 2021).

the value of resources and labour cannot be quantified in dollars, and there is no such thing as a “correct” price.

Prices under capitalism do not reflect value or utility in any objective way. Rather, they reflect, among other things, the (im)balance of power between market agents (capital and labour, core and periphery, lead firms and their suppliers, etc); in other words, they are a political artefact

While prices by definition do not reflect value, they do allow us to compare the scale of drain to prevailing monetary representations of production and income in the world economy.

Fig. 2 shows that drain from the South in 2015 amounted to $14.1 trillion when measured in terms of raw material equivalents, $5.1 trillion when measured in terms of land, $3.6 trillion when measured in terms of energy and $20.3 trillion when measured in terms of labour.

Over the period 1990–2015, the drain sums to $242 trillion (constant 2010 USD). This represents a significant “windfall” for the North, similar to the windfall that was derived from colonial forms of appropriation; i.e., goods that did not have to be produced on the domestic landmass or with domestic labour, and did not have to be bought on the domestic market, or paid for with exports (see Pomeranz, 2000, Patnaik, 2018). While previous studies have shown that the price distortion factor increased dramatically during the structural adjustment period in the 1980’s (Hickel et al., 2021), our data confirms that since the early- to mid-1990’s it has tended to decline slightly. This means that the increase in drain during the period 1990–2007, prior to the global financial crisis, was driven primarily by an increase in the volume of international trade rather than by an increase in price distortion.

Table 3 shows that, over the 1990–2015 period, resources appropriated from the South have been worth on average roughly a quarter of Northern GDP.

the North’s reliance on appropriation from the South has generally increased over the period (despite a significant drop after the global financial crisis), whereas the South’s losses as a share of total economic activity have generally decreased, particularly since 2003, due to an increase in South-South trading and higher domestic GDP creation or capture within the South, both driven largely by China

Aid flows create the powerful impression that rich countries give benevolently to poorer countries. But the data on drain through unequal exchange raises significant questions about this narrative.

net appropriation by DAC countries through unequal exchange from 1990 to 2015 outstripped their aid disbursements over the same period by a factor of almost 80

for every dollar of aid that donors give, they appropriate resources worth 80 dollars through unequal exchange. From the perspective of aid recipients, for every dollar they receive in aid they lose resources worth 30 dollars through drain

The dominant narrative of international development holds that poor countries are poor because of their own internal failings and are therefore in need of assistance. But the empirical evidence on unequal exchange demonstrates that poor countries are poor in large part because they are exploited within the global economy and are therefore in need of justice. These results indicate that combating the deleterious effects of unequal exchange by making the global economy fairer and more equitable would be much more effective, in terms of development, than charity.

In an equitable world, the resource trade deficit that the North sustains in relation to the South would be financed with a parallel monetary trade deficit. But in reality, the monetary trade deficit is very small, equivalent to only about 1% of global trade revenues, and fluctuates between North and South. In effect, this means that the North achieves its large net appropriation of resources and labour from the South gratis.

The question of sectoral disparities has been moot since the 1980s, however, as industrial production has shifted overwhelmingly to the South. The majority of Southern exports (70%) consist of manufactured goods (data from UNCTAD; see Smith, 2016). Of all the manufactured goods that the USA imports, 60% are produced in developing countries. For Japan it is 70%. We can see this pattern reflected also in the industrial workforce. As of 2010, at least 79% of the world’s industrial workers live in the South (data from the ILO; see Smith, 2016). This shift is due in large part to the rise of global commodity chains, which now constitute 70% of international trade. Between 1995 and 2013, there has been an increase of 157 million jobs related to global commodity chains, and an estimated 116 million of them are concentrated in the South, predominantly in the export manufacturing sector (ILO, 2015). In other words, during the period we analyse in this paper (1990–2015), the South has contributed the majority of the world’s industrial production, including high-technology production such as computers and cars. And yet price inequalities remain entrenched.

if Northern states or firms leverage monopoly power within global commodity chains to depress the prices of imports and increase the prices of final products, their labour “productivity” appears to improve, and that of their counterparts declines, even if the underlying production process remains unchanged. Indeed, empirical evidence indicates that real productivity differences between workers are minimal, and cannot explain wage inequalities (Hunter et al., 1990).

wage inequalities exist not because Southern workers are less productive but because they are more intensively exploited, and often subject to rigid systems of labour control and discipline designed to maximize extraction (Suwandi et al., 2019). Indeed, this is a major reason why Northern firms offshore production to the South in the first place: because labour is cheaper per unit of physical output (Goldman, 2012).

the terminology of “value-added” is a misnomer. In international trade, TiVA does not tell us who adds more value but rather who has more power to command prices. And in the case of global commodity chains, TiVA does not indicate where value is produced but rather where it is captured (Smith, 2016).

our analysis reveals that value in global commodity chains is disproportionately produced by the South, but disproportionately captured by the North (as GDP). Value captured in this manner is misleadingly attributed to Northern economic activities

rich countries are able to maintain price inequalities simply by virtue of being rich. This finding supports longstanding claims by political economists that, all else being equal, price inequalities are an artefact of power. Just as in a national economy wage rates are an artefact of the relative bargaining power of labour vis-à-vis capital, so too in international trade prices are an artefact of the relative bargaining power of national economies and corporate actors vis-à-vis their trading partners and suppliers. Countries that grew rich during the colonial period are now able to leverage their economic dominance to depress the costs of labour and resources extracted from the South. In other words, the North “finances” net appropriation from the South not with money, but rather by maintaining the prices of Southern resources and labour below the global average level.

Patents play a key role here: 97% of all patents are held by corporations in high-income countries (Chang, 2008:141)

In some cases, patents involve forcing people in the South to pay for access to resources they might otherwise have obtained much more affordably, or even for free (Shiva, 2001, Shiva, 2016).

In the World Bank and the IMF, Northern states hold a majority of votes (and the US holds a veto), thus giving them control over key economic policy decisions. In the World Trade Organization (which controls tariffs, subsidies, and patents), bargaining power is determined by market size, enabling high-income nations to set trade rules in their own interests.

ubsidized agricultural exports from the North undermine subsistence economies in the South and contribute to dispossession and unemployment, placing downward pressure on wages. Militarized borders preclude easy migration from South to North, thus preventing wage convergence. Moreover, structural adjustment programs (SAPs) imposed by the World Bank and IMF since the 1980s have cut public sector salaries and employment, rolled back labour rights, curtailed unions, and gutted environmental regulations (Khor, 1995, Petras and Veltmeyer, 2002).

SAPs, bilateral free trade agreements, and the World Trade Organization have forced global South governments to remove tariffs, subsidies and other protections for infant industries. This prevents governments from attempting import substitution, which would improve their export prices and drive Northern prices down. Tax evasion and illicit financial flows out of the South (which total more than $1 trillion per year) drain resources that might otherwise be reinvested domestically, or which governments might otherwise use to build national industries. This problem is compounded by external debt service obligations, which drain government revenue and require obeisance to economic policies dictated by creditors (Hickel, 2017). In addition, structural dependence on foreign investors and access to Northern markets forces Southern governments and firms to compete with one another by cutting wages and resource prices in a race to the bottom.

structural power imbalances in the world economy ensure that labour and resources in the South remain cheap and accessible to international capital, while Northern exports enjoy comparatively higher prices

Cheap labour and raw materials in the global South are not “naturally” cheap, as if their cheapness was written in the stars. They are actively cheapened

the analysis obscures class and geographic inequalities within countries and regions, which are significant when it comes to labour prices as well as resource consumption. The high levels of resource consumption that characterize Northern economies are driven disproportionately by rich individuals and affluent areas, as well as by corporations that control supply chains, and enabled by internal patterns of exploitation and unequal exchange in addition to drain through trade (Harvey, 2005). For example, there are marginalized regions of the United States that serve as an “internal periphery” (Wishart, 2014). It would also be useful to explore the gender dynamics of unequal exchange within countries. These questions cannot be answered with our data, however.

This research confirms that the “advanced economies” of the global North rely on a large net appropriation of resources and labour from the global South, extracted through induced price differentials in international trade. By combining insights from the classical literature on unequal exchange with contemporary insights about global commodity chains and new methods for quantifying the physical scale of embodied resource transfers, we are able to develop a novel approach to estimating the scale and value of resource drain from the global South. Our results show that, when measured in Northern prices, the drain amounted to $10.8 trillion in 2015, and $242 trillion over the period from 1990 to 2015 – a significant windfall for the North, equivalent to a quarter of Northern GDP. Meanwhile, the South’s losses through unequal exchange outstrip their total aid receipts over the period by a factor of 30.

support contemporary demands for reparations for ecological debt, as articulated by environmental justice movements and by the G77

True repair requires permanently ending the unequal distribution of environmental goods and burdens between the global North and global South, restoring damaged ecosystems, and shifting to a regenerative economic system.

It is clear that official development assistance is not a meaningful solution to global poverty and inequality; nor is the claim that global South countries need more economic liberalisation and export-oriented market integration. The core problem is that low- and middle-income countries are integrated into the global economy on fundamentally unequal terms. Rectifying this problem is critical to ensuring that global South countries have the financial, physical and human resources they need to improve social outcomes.

democratize the institutions of global economic governance, such as the World Bank, IMF and WTO, so that global South countries have more control over trade and finance policy.

end the North’s use of unfair subsidies for agricultural exports, and remove structural adjustment conditions on international finance, which would help mitigate downward pressure on wages and resource prices in the South while at the same time enabling Southern countries to build sovereign industrial capacity

a global living wage system, and a global system of environmental regulations, would effectively put a floor on labour and resource prices

Reducing North-South price differentials would in turn reduce the scale of the North’s net resource appropriation from the South (in other words, it would reduce ecologically unequal exchange), thus reducing excess consumption in the North and the ecological impacts that it inflicts on the South.

Structural transformation will only be achieved through political struggle from below, including by the anti-colonial and environmental justice movements that continue to fight against imperialism today

even here in the country’s financial capital, where residents bear daily witness to the stark extremes of Indian wealth and poverty, Mr. Ambani’s building is so spectacularly over the top that the city’s already elastic boundaries of excess and disparity are being stretched to new dimensions

Once thought to be about 50 percent and 40 percent urban respectively, the new research argues Asia and Africa are closer to 90 percent and 80 percent, or roughly double previous estimates

The reason for the past errors is simple, Dijkstra said, because countries self-report their demographic statistics to the U.N. and they use widely different standards.

Most countries use a population density threshold, but those figures can vary widely. The United States, for example, starts classifying settlements as urban when they exceed a population threshold of 2,500. For Egypt, the number is 100,000, according to Dijkstra.

"If you leave it to every country to define its own administrative boundary of what is urban and what is rural, then you have no benchmark for comparability," said Sameh Wahba, head of the World Bank's urban programme.

"A city represents a concentration of people but it also represents a concentration of capital, represented partly in the fixed stock of buildings,"

Anjali Mahendra, cities research director at the World Resources Institute, a Washington-based think tank, cautioned satellite imagery that captures the population density of human settlements might not tell the whole story. "A lot of these satellite-image based definitions of urban miss informal settlements,"

Exacerbating this danger is the deliberate and accelerating breakdown of the arms control architecture that for decades provided restraint, transparency, and predictability for each side’s conventional and nuclear forces. In their absence, Russia and the West are assuming and planning for worst-case scenarios. The first crack appeared in 2002, when the United States withdrew from the Anti-Ballistic Missile (ABM) Treaty, signed three decades earlier to prevent Washington and Moscow from deploying nationwide defenses against long-range ballistic missiles. Five years later, Russia effectively suspended another landmark agreement, the 1990 Treaty on Conventional Armed Forces in Europe, and NATO followed suit. The 1987 Intermediate-Range Nuclear Forces (INF) Treaty—which banned an entire class of destabilizing nuclear-capable missiles on European territory—has been dealt a likely fatal blow with this year’s decisions by Washington to withdraw from the treaty and by Moscow to suspend implementation of it.

The fate of the Comprehensive Nuclear Test Ban Treaty is also in doubt, with four Republican U.S. Senators writing to President Donald Trump this past spring asking if he would consider “unsigning” the treaty. The future of the 2010 New START treaty is also unclear

At the same time as checks on existing weapons are falling away, new technologies threaten to further destabilize the military balance. Sophisticated cyberattacks could compromise early warning systems or nuclear command-and-control structures, increasing the risk of false alarms. Prompt-strike forces, including delivery systems that pair conventional or nuclear warheads with a hypersonic boost-glide vehicle or cruise missile, can travel at very high speeds, fly at low altitudes, and maneuver to elude defenses. If deployed, they would decrease a defender’s warning and decision time when under attack, increasing the fear of military planners on both sides that a potential first strike could deliver a decisive advantage to the attacker. Then there is the militarization of outer space, a domain that remains virtually unregulated by agreements or understandings: China, Russia, and, most recently, India have built up their antisatellite capabilities, and Washington is mulling a dedicated space force. 

the absence of dialogue between Russia and the West—in particular, between civilian and military professionals in the defense and foreign ministries. The current disconnect is unprecedented even when compared with the height of the Cold War

The United States and its NATO allies are now stuck in a retaliatory spiral of confrontation with Russia.

transatlantic discord has damaged the perception of NATO as a strong alliance

By virtue of its vast geography, permanent membership in the UN Security Council, rebuilt military, and immense nuclear forces, Russia can disrupt geopolitical currents in areas vital to the interests of the United States, including Europe, the Middle East, Asia, and the Arctic. Further clashes and crises are not just possible but probable

The fact that Trump and Putin reportedly agreed to a new dialogue on strategic stability and nuclear dangers at a meeting in Helsinki in July 2018 was a step in the right direction. But their inability to follow through—including at the level of civilian and military professionals, who need the green light from their leaders—underlines how dysfunctional relations have become

the United States and Russia could take more specific steps to reduce the likelihood of a new nuclear arms race—of vital importance for international security, particularly in light of the probable demise of the INF treaty. All nations have an interest in seeing the New START treaty fully implemented and extended through 2026, the maximum five-year extension permitted by the treaty.

Today, decision-makers in Washington and Moscow have only a precious few minutes to decide whether a warning of a possible nuclear attack is real and thus whether to retaliate with a nuclear attack of their own. New technologies, especially hypersonic weapons and cyberattacks, threaten to make that decision time even shorter. The fact that Russian troops are deployed, and routinely conduct military exercises, in Russia’s western regions close to NATO’s boundaries, and NATO troops are deployed, and have recently conducted military exercises, close to Russia’s borders further raises fears of a short-warning attack. Such shrinking decision time and heightened anxieties make the risk of a mistake all too real. Leaders in both Washington and Moscow should clearly direct their military leaders to work together on ways to minimize such fears and increase their decision time

leaders in Moscow, London, and Paris could once again become consumed with fears of a short-warning nuclear attack that could decapitate a nation’s leaders and its command and control, which would greatly increase the risk of false warnings.

Exchanging more information about each side’s operations and capabilities could help ensure that prompt-strike systems, such as modern hypersonic missiles, do not further erode strategic stability. This is primarily a U.S.-Russian issue, but with China’s reported development of hypersonic missile capabilities, addressing it will ultimately require broader engagement. It would also help to offer more transparency on nonnuclear prompt-strike systems and commit to segregating these conventional capabilities from nuclear-weapons-related activities or deployments.

Cyberattacks on nuclear facilities, nuclear command-and-control structures, or early warning systems could cause miscalculations or blunders, such as a false warning of a missile attack or a failure to prevent the theft of nuclear materials. As states continue to develop and refine their ability to attack satellites, the United States and Russia could be blinded in the early stages of a conflict.

the understanding, first articulated in 1985 by U.S. President Ronald Reagan and Soviet leader Mikhail Gorbachev, that “a nuclear war cannot be won and must never be fought.” Affirming this principle was an important building block to ending the Cold War.

some have suggested abandoning U.S.-Russian talks and waiting for new leadership in both countries. That would be a mistake. Dialogue between the two presidents remains essential: only that can create the political space for civilian and military officials in both nations to engage with one another in discussions that could prevent catastrophe

Washington and Moscow are acting as if time is on their side. It is not.

As leaders understand the limits of allies’ backing, reality sinks in. Saudi Arabia, initially encouraged by the Trump administration’s apparent blank check, flexed its regional muscle until a series of brazen Iranian attacks and noticeable U.S. nonresponses showed the kingdom the extent of its exposure, driving it to seek a settlement in Yemen and, perhaps, de-escalation with Iran.

another trend that warrants attention: the phenomenon of mass protests across the globe. It is an equal-opportunity discontent, shaking countries governed by both the left and right, democracies and autocracies, rich and poor, from Latin America to Asia and Africa. Particularly striking are those in the Middle East—because many observers thought that the broken illusions and horrific bloodshed that came in the wake of the 2011 uprisings would dissuade another round.

In Sudan, arguably one of this past year’s better news stories, protests led to long-serving autocrat Omar al-Bashir’s downfall and ushered in a transition that could yield a more democratic and peaceful order. In Algeria, meanwhile, leaders have merely played musical chairs. In too many other places, they have cracked down. Still, in almost all, the pervasive sense of economic injustice that brought people onto the streets remains. If governments new or old cannot address that, the world should expect more cities ablaze this coming year.

More people are being killed as a result of fighting in Afghanistan than in any other current conflict in the world.

In 2018, aggressive international intervention in Yemen prevented what U.N. officials deemed the world’s worst humanitarian crisis from deteriorating further; 2020 could offer a rare opportunity to wind down the war. That chance, however, is the product of a confluence of local, regional, and international factors and, if not seized now, may quickly fade.

Perhaps nowhere are both promise and peril for the coming year starker than in Ethiopia, East Africa’s most populous and influential state.

Mass protests between 2015 and 2018 that brought Abiy to power were motivated primarily by political and socioeconomic grievances. But they had ethnic undertones too, particularly in Ethiopia’s most populous regions, Amhara and Oromia, whose leaders hoped to reduce the long-dominant Tigray minority’s influence. Abiy’s liberalization and efforts to dismantle the existing order have given new energy to ethnonationalism, while weakening the central state.

Burkina Faso is the latest country to fall victim to the instability plaguing Africa’s Sahel region.

Burkina Faso’s volatility matters not only because of harm inflicted on its own citizens, but because the country borders other nations, including several along West Africa’s coast. Those countries have suffered few attacks since jihadis struck resorts in Ivory Coast in 2016. But some evidence, including militants’ own statements, suggest they might use Burkina Faso as a launching pad for operations along the coast or to put down roots in the northernmost regions of countries such as Ivory Coast, Ghana, or Benin.

The war in Libya risks getting worse in the coming months, as rival factions increasingly rely on foreign military backing to change the balance of power. The threat of major violence has loomed since the country split into two parallel administrations following contested elections in 2014. U.N. attempts at reunification faltered, and since 2016 Libya has been divided between the internationally recognized government of Prime Minister Fayez al-Sarraj in Tripoli and a rival government based in eastern Libya. The Islamic State established a small foothold but was defeated; militias fought over Libya’s oil infrastructure on the coast; and tribal clashes unsettled the country’s vast southern desert. But fighting never tipped into a broader confrontation.

In April 2019, forces commanded by Khalifa Haftar, which are backed by the government in the east, laid siege to Tripoli, edging the country toward all-out war.

Emirati drones and airplanes, hundreds of Russian private military contractors, and African soldiers recruited into Haftar’s forces confront Turkish drones and military vehicles, raising the specter of an escalating proxy battle on the Mediterranean

A diplomatic breakthrough to de-escalate tensions between the Gulf states and Iran or between Washington and Tehran remains possible. But, as sanctions take their toll and Iran fights back, time is running out.

After falling off the international radar for years, a flare-up between India and Pakistan in 2019 over the disputed region of Kashmir brought the crisis back into sharp focus. Both countries lay claim to the Himalayan territory, split by an informal boundary, known as the Line of Control, since the first Indian-Pakistani war of 1947-48.

while the absolute number of attacks is down, the lethality of terrorism has risen sharply in the past two years

Today’s third generation is engaged in plots that are simpler yet more widespread than the 9/11 attacks by Al Qaeda, Watts told me. “They’re not as sophisticated as in the Al Qaeda era, when complex operations were well coördinated and carried out by a few designated men. Now, some are not even trained or formally recruited. They’re self-empowered.” As a result, killing people on a bridge may not have the same impact or symbolic emphasis as an attack on a U.S. Embassy or the World Trade Center. But the reaction can be just as profound.

“The West can do things on the margins to be safer,” Berger said, but it still faces another “five or ten years of potentially dangerous situations. There’s not any silver bullet that will reduce the occurrence of these events in the short term. We need to be thinking about resilience—and how we’re going to assimilate events when they happen.”

Egypt is not collecting tolls on ships’ passage. And ships, including those operated by Evergreen, have begun to reroute around the Cape of Good Hope.

For now, the knock-on effect of the stoppage is the accumulation of insurance claims and late fees, and delays in the delivery of cargo. But in the longer term, much as it did in the mid-twentieth century, the 2021 blockage of the Suez Canal, combined with the effects of the pandemic, may precipitate a reckoning in how maritime transport operates.

When the Liberian political entrepreneur Charles Taylor began an insurgency in 1989, he did so with arms and men from nearby Burkina Faso, whose leader Blaise Compaoré was practically a pyromaniac, lighting conflagrations in Sierra Leone and Ivory Coast as well. When Nigeria, which sees itself as the West African regional hegemon, sent troops to Liberia in 1990, ostensibly as a West African peacekeeping force (the Economic Community of West African States Monitoring Group), the aim wasn’t only to stabilize Liberia and prevent Taylor from taking power, but also to rein in Compaoré’s ambitions and cement Nigeria’s status as the West African powerbroker.

In a recent article in the Journal of Modern African Studies, some colleagues and I found that just 30 percent of African conflicts since 1960 were “internal” and the remainder a mixture of “internationalized internal” and “interstate”: fully 70 percent were actually internationalized in one way or another.

In the DRC, the U.N. Force Intervention Brigade (FIB) is a combat force to supplement the peacekeeping mission, with the aim of suppressing violent insurgents in the east of the country. The most powerful of those armed groups are backed by Rwanda. The FIB’s main troop contributors are South Africa and Tanzania—both of which have political interests in keeping Rwanda’s ambitions in check.

During the last 15 years, as the African Union and United Nations, along with regional organizations such as the Economic Community of West African States, have constructed a new peace and security order for Africa, these patterns of armed interstate rivalry have not gone away

pan-African cooperation to support anti-colonial insurgencies in southern Africa; of mutual destabilization in the Horn of Africa, as Ethiopia sought to cement its position as regional hegemon and undermined governments in Somalia and Sudan and they reciprocated; of Libya’s invasion of Chad and sponsorship of rebels across the Sahel and West Africa to try to establish Muammar al-Qaddafi as the big man of Africa; of rivalries between Nigeria, Ivory Coast, and Burkina Faso fought out in Liberia and Sierra Leone; and of how the path towards Africa’s “great war” in the Democratic Republic of Congo (DRC) was paved by interstate armed rivalries and proxy wars in the African Great Lakes, the Nile Valley, and Angola.

Similar calculations underpin Chad’s dispatch of special forces to Operation Barkhane in Mali, which is a French-led military intervention to fight al Qaeda in the Islamic Maghreb and other insurgent groups. Scores of Chadian soldiers have died, a price that the country’s government is willing to pay because of its own security interests

The backbone of the African Union Mission in Somalia, a combat mission against the militant group al-Shabab, is made up of troops from next-door Ethiopia and Kenya, both of which have used force against Somalia many times over the previous decades. So far, the mission has suffered somewhere between around 750 and 1,150 fatalities—losses that could only be borne by countries with national-security stakes in the outcome.

old patterns of cross-border conflict are now replicated under the banner of peacekeeping

Last year’s peace deal for South Sudan was first and foremost a pact between the country’s two meddlesome neighbors, Sudan and Uganda

Peace agreements for countries such as the Central African Republic, Mali, and Somalia first cater to the interests of the regional powerbrokers and only second deal with internal issues

conflicts are likely to follow the established patterns of combining covert intervention and support to proxies, but overt wars cannot be ruled out