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As the article states: "The world's largest economies took a step toward common global guidelines for exchange-rate policies with a pledge Saturday to refrain from targeting their currency policies to gain a competitive trading advantage." This is well-involved in this week's topic, which is aggregate demand. Particularly, this article refers to its component, net exports (export revenue minus import expenditure, or simply X-M) and then its subsidiary component, changes in exchange rates. If a country's exchange rate becomes stronger, then this makes the country's exports more expensive to foreigners and vice versa. Manipulating with exchange rates can bring a certain country substantial trading advantage and this is what G-20 wants to overcome and allow free-trade market as it should be.

This article discusses the hard empirical evidence, arguing that, in fact, Japan is behaving rather responsibly and that other strong economies have themselves benefited from undervalued currencies. That said, it is true that politicians' short time horizons often lead to stealthy policy and large swings in exchange rates. Economists should therefore aim to promote longer-run cosmopolitan interests rather than shorter-run nationalistic agendas where possible.

This article mainly focuses on China's economic growth and its fast approach to what could put it's economy in an equilibrium state."The rate, the spot rate and future rate, determined by the market supply and demand, basically are very close to the equilibrium rate," said Zhou Xiaochuan, governor of the People's Bank of China. He also warns that at this time China is trying to maintain low prices and if external governments begin to have inflation problems this could potentially create problems for China's economy. This comment was a directly linked with China's exchange rate against the US dollar, an issue that has yet to be addressed.

This article is about the current inflation rate in Great Britain and its unchanging status in the past four years. Jeremy Cook, chief economist at the World First foreign exchange company said, "Home-grown price pressures are also increasing with transport, food and utilities boosting upwards in the latter part of 2012; this will continue to erode wage value through 2013, hurting consumer confidence and limiting spending."

I find this article thoroughly bizarre. Apparently, South African had this huge deficit calculated to be 116.9 billion rand. I don't what the exchange rate on their currency is, but that part isn't that surprising. What's surprising, at least to me and nobody else in this article, it seems, is that they reduced the deficit to about 34.6 billion by-- get this --redoing their calculations. They neglected to include trade with foreign neighbors, which just so happened to help out their balance of accounts. I can see why the recalculation helped to clear things up and, essentially, made South Africa's situation better, but it's weird how the article refers to it as if the deficit "decreased" because the numbers were run under differing conditions. Am I crazy?

This article talks about the drop in price for the Australian dollar. Glenn Stevens commented on this drop and admits that the volatility of Australia's currency will deter investors. Obviously, volatility means there is the potential for a quick rise in exchange rate as well as a quick fall, but investors want something more secure, something that is steadily increasing, not a moving target.

The article talks about the effect of a fixed currency exchange rate in Venezuela.

Pound sterling / euro exchange rate has increased, meaning that pound sterling appreciates in value. That is due to a run of good economic data and Britain's industrial output in June rose much faster than forecast and hit its quickest pace in two years. I believe demand for sterling, which reflects the value of its exports of goods and services rose because of the peak tourist season in Britain (urgency to buy foreign currency) and increased industrial activity. However, as far as many economic analysts are concerned, sterling will continue to weaken in a long run...

The article talks about the change in exchange rate and their value.