Mr Fukuda said this was a "significant step towards pandemic influenza" but a pandemic should not be considered inevitable. Experts did not recommend closing borders or restricting travel, he stressed. "With the virus being widespread... closing borders or restricting travel really has very little effects in stopping the movement of this virus," he said.

The first batches of a swine flu vaccine could be ready in four to six months' time but it will take several more months to produce large quantities of it, Mr Fukuda said.

Health experts say the virus comes from the same strain that causes seasonal outbreaks in humans but also contains genetic material from versions of flu which usually affect pigs and birds.

The UN Food and Agriculture Organisation is sending a team to investigate allegations that industrial pig farms in Mexico were the source of the outbreak.

In almost all swine flu cases outside Mexico, people have been only mildly ill and have made a full recovery.

In Canada, six cases have been recorded at opposite ends of the country, in British Columbia and in Nova Scotia.

Swine flu officially arrived in Europe on Monday, when tests confirmed that a young man in Spain and two people in Scotland - all of whom had recently returned from Mexico - had the virus. They were said to be recovering well.

Several countries have banned imports of raw pork and pork products from Mexico and parts of the US, although experts say there is no evidence to link exposure to pork with infection.

Shares in airlines have fallen sharply on fears about the economic impact of the outbreak.

The BBC's Charles Haviland in Colombo says until now the military and the government have said that they were not using any heavy weapons in this current stage of the fighting and had caused no civilian casualties. This new statement, however, does appear to acknowledge that civilians have been harmed as aid agencies and the UN have been saying, our correspondent says.

The Tamil Tigers have fought for an independent homeland for Sri Lanka's Tamil minority since 1983. More than 70,000 people have been killed in the war, but that figure could now be far higher because of intensified fighting in recent weeks.

But nowhere has the violence reached the level it has in Hungary, spreading fear and intimidation through a Roma population of roughly 600,000. (Estimates vary widely in part because Roma say they are afraid to identify themselves in surveys.)

“In the past five years, attitudes toward Roma in many parts of Eastern Europe have hardened, and new extremists have started to use the Roma issue in a way that either they didn’t dare to or didn’t get an airing before,” said Michael Stewart, coordinator of the Europe-wide Roma Research Network.

The extreme-right party Jobbik has used the issue of what its leaders call “Gypsy crime” to rise in the polls to near the 5 percent threshold for seats in Hungary’s Parliament in next year’s election, which would be a first for the party. Opponents accuse the Hungarian Guard, the paramilitary group associated with the party, of staging marches and public meetings to stir up anti-Roma sentiment and to intimidate the local Roma population.

While President Mahmoud Ahmadinejad continues to make belligerent noises about Israel and the West, others in Tehran have hinted that they're ready for a change. In a Mar. 21 speech, Supreme Leader Ali Khamenei trotted out standard anti-American rhetoric but also indicated a willingness to talk. And Ahmadinejad's probable opponent in the June presidential election, former Prime Minister Mir Hossein Moussavi, favors negotiations with the US. "Obama has prompted Iranians to have an open debate about the relationship they want to have with the US," says Gary Sick, an Iran specialist at Columbia University in New York. "This is something that hasn't been seen in 30 years."

Most Iranian executives seem to be rooting for Moussavi. Although he is an old-guard leftist, businesspeople hope he would lead a reform-minded administration that could ease Iran's isolation. "Ahmadinejad has done serious damage to Iran's reputation and the reputation of Iranian business," says Mohammad Reza Behzadian, a former head of the Tehran Chamber of Commerce who runs Tondar Middle East, a trading company in Tehran.

Facing pressure from Washington, major European banks have stopped doing business in the country. So Iranians must pay exorbitant rates for trade financing from second- and third-tier banks in Europe, the Middle East, and Asia. Some Iranians work around the restrictions by setting up subsidiaries in the United Arab Emirates and playing cat-and-mouse with American inspectors. But such solutions are expensive, adding billions of dollars to Iran's soaring import bill-$57 billion for the year that ended in March. "It's a challenge finding banks that we can trust," says Parviz Aghili, CEO of Karafarin Bank in Tehran.

Sanctions also restrict the development of Iran's vital energy reserves. Tehran wants to boost oil production capacity by 25 percent, to 5 million barrels a day, but with little foreign help and aging fields in rapid decline, it's tough even to maintain current output. That's one reason Iranian oil officials are quick to say they want American help. "We don't have any problems with US investment," says M.A. Khatibi Tabatabaei, Iran's representative on OPEC's board of governors.

Ahmadinejad's erratic policies make things worse. The populist President has spent freely on everything from loans to small businesses of questionable viability to imported food and cash handouts for the poor. And he has pressured banks to shovel out easy credit, leading to a real estate boom. But worried that oil earnings will start to peter out, the central bank has tightened up, starving factories of capital and prompting a sharp fall in property prices.

Last year, when oil prices surged, the Iranian economy could shrug off its problems. With oil's steep decline and the global financial crunch, though, some fear social unrest. Many factories are months behind on salaries, says Ali Reza Mahjoub, a member of Parliament and head of Workers' House, a labor group. He estimates that unemployment, officially 12.5 oercent, is really closer to 17 oercent. As financing dries up, building is grinding to a halt, says developer Amir-Mohamad Mazaheri. "This is a very dangerous situation," he says, puffing on a cigarette in a new tower in North Tehran. "There will be 3-4 million construction workers looking to any activity to support themselves."

Even with sanctions in place, savvy foreigners have managed to make a mark in Iran-though it takes persistence. Renault, for instance, has a $200 million joint venture to build the Logan compact. But late payments from the Iranians and difficulties training enough suppliers to meet a requirement of 60 percent local content have slowed progress, Renault says. The venture, Renault Pars, has cut its output target for the Logan by 25 percent, to 150,000 cars per year. "You need a lot of time and energy," says Renault Pars chief Jean-Michel Kerebel. "What takes five hours in Europe could take five days here."

The threat comes after AQIM last week released two of the hostages, Marianne Petzold, from Germany, Gabriella Greitner, from Switzerland. Greitner's husband would be held "until we have achieved our legitimate demands", the group said yesterday. Two Canadian diplomats - Robert Fowler, the UN special envoy for Niger, and his aide, Louis Guay - who were kidnapped in a separate incident near Niger's capital, Niamey, in December, were also freed on Wednesday.

AQIM had demanded the release of 20 of its members detained in Mali and other countries. Details of the deal reached over the four victims freed so far remain murky, but there has been speculation that a ransom was paid. Canada has denied making any payment to the kidnappers, but said it could not speak for other governments.

Unemployment, inflation, and mortgage repayments are soaring as a result of the crash, which has saddled Iceland with levels of debt running to tens of thousands for each of the population of 320,000 and necessitating a 10bn-dollar bailout programme led by the International Monetary Fund.

Public bitterness at the sudden collapse of a quality of life that was among the highest in the world fuelled fears that voters would stay at home on Saturday in protest at the entire political system. "I don't care who's in charge, right or left. If things don't work out, we'll be back on the streets," said Hordur Torfason, a leader of the January protests that brought down the previous centre-right government. But turnout, at 85%, was higher than in 2007's election.

The result leaves the country run by a former air stewardess and a former lorry driver - Sigurdardottir and the Left-Greens' leader, Steingrimur Sigfusson, who is expected to be finance minister. Both have been heading an interim government since February.

The rightwing and anti-EU Independence party has been in power for 18 years and has dominated Icelandic politics for 70 years. Its vote fell to 23% - its lowest tally ever - taking 16 seats as opposed to 25 two years ago.

Sigurdardottir promptly claimed the poll triumph as a mandate for negotiating entry to the EU - a central campaign pledge. Brussels would welcome Iceland's application and the country could join quickly since it already applies about 75% of EU law. However, Sigurdardottir's junior coalition partner is anti-EU and coming up with a coherent joint policy on the issue will be a key test of the coalition.

For decades, Iceland has staunchly rebuffed talk of joining the EU, fearful of handing control of its vital fishing sector to the European Commission, which sets member states' catch quotas. But Brussels admitted last week that decades of fisheries policy had resulted in failure and pledged to devise a new system.

In a statement read on state TV, Mr Maliki said he condemned the killings as a "breach of the security pact".

He called on the US to "release the detainees and hand over those responsible for this crime to the courts".

The chairman of the provincial council, Mahmud Abd al-Rida, said the raid had embodied the "meaning of the occupation". "Their claim of friendship and early withdrawal from our dear land, according to the security agreement signed by the two Iraqi and US parties, is meaningless," he said.

The complicated Status of Forces Agreement was signed in November last year and came into force in early 2009. It requires all military operations in Iraq to have the government's approval and allows for US soldiers to face trial if they commit crimes off base.

The clashes started when the government deployed troops in some areas of the district over the weekend.

The BBC's M Ilyas Khan in Islamabad says this was presumably to prevent an incursion by militants similar to the recent one in Buner district.

The Taleban spokesman in Swat, Muslim Khan, accused the government of violating the terms of the peace agreement in Swat. The Taleban warned of militant attacks in all parts of Malakand division - the group of six districts where the new Sharia law has been enforced - if the military operation in Dir was not halted.

The government and the military say they still want to abide by the terms of the Swat peace deal and consider it intact. However, they believe that the Taleban are yet to fulfil their part of the deal, which is to disarm and to concede administrative power to government departments.

In Buner, the presence of the Taleban continues in main towns despite an announcement on Friday that they would leave the area and go back to their bases in Swat. Troops have still not advanced beyond a border village.

Officials said most of those killed so far in Mexico were young adults - rather than more vulnerable children and the elderly. It is unclear how effective currently available flu vaccines would be at offering protection against the new strain, as it is genetically distinct from other flu strains.

Only a handful of the Mexican cases have so far been laboratory-confirmed as swine flu, while in the US confirmed cases had only mild symptoms. Health experts want to know why some people become so seriously ill, while others just get a bit of a cold, the BBC's Imogen Foulkes reports from Switzerland.

Speaking in Geneva, an expert from the World Health Organization (WHO), the UN's health agency, expert said the swine flu virus could be capable of mutating into a more dangerous strain but that more information was needed before raising the WHO's pandemic alert phase.

H1N1 is the same strain that causes seasonal flu outbreaks in humans but the newly detected version contains genetic material from versions of flu which usually affect pigs and birds.

It is spread mainly through coughs and sneezes.

Ten New Zealand students from a group which visited Mexico have tested positive for Influenza A, making it "likely" they are infected with swine flu In France, a top health official told Le Parisien newspaper there were unconfirmed suspicions that two individuals who had just returned from Mexico might be carrying the virus Spain's health ministry says three people who returned from a trip from Mexico with flu symptoms are in isolation and being tested In Israel, medics are testing a 26-year-old man who has been taken to hospital with flu-like symptoms after returning from a trip to Mexico Two people in Queensland, Australia, are being tested in hospital after developing flu-like symptoms on returning from Mexico

Officials in Mexico confirmed that 20 people had died from the virus while another 61 deaths were suspected cases of swine flu. More than 1,300 people have been admitted to hospital with suspected symptoms since 13 April. With Mexico City apparently the centre of infection, many people are choosing to leave the city, the BBC's Stephen Gibbs reports.

Dr Fukuda said on Sunday there was no proof that eating pork would lead to infection. "Right now we have no evidence to suggest that people are getting exposed, or getting infected, from exposure to pork or to pigs, and so right now we have zero evidence to suspect that exposure to meat leads to infections," he said.

On March 28, Mr. Maliki’s Shiite-led government arrested a prominent Sunni leader on charges of heading a secret armed wing of Mr. Hussein’s Baath Party. A week later, the prime minister accused Baathists of orchestrating car bombings that killed more than 40 people. On Monday, he lashed out again, saying the Baath Party was “filled with hate from head to toe.”

Mr. Maliki’s earlier effort to reunite the country was one of Washington’s primary benchmarks for measuring political progress in Iraq. The goal was to separate Baathist opponents of the government who were considered more willing to trade violence for political power from intractable extremists, many of them religious. Early last year, under intense American pressure, Mr. Maliki pushed through Parliament a law to ease restrictions on the return of Baath Party members to public life. But 15 months later, the law has yet to be put into effect.

Mr. Maliki’s retreat risks polarizing Iraqis again and eroding hard-fought security gains. One hundred sixty people died in bombings on Thursday and Friday alone. There is no evidence that Baathists were involved, but fears are rising that they and jihadi insurgents are increasingly cooperating in areas, Baghdad especially, that have been largely quiet over the last year.

The prime minister’s return to a hard line appears to be motivated by a number of factors. Despite Mr. Maliki’s success in provincial elections in January and in projecting himself as a strong nonsectarian leader, his Dawa Party recognizes that it still needs his Shiite partners to govern. And his Shiite rivals, many of whom are close to Iran, have accused him of recently orchestrating a wholesale return of Baathists to bolster his standing with the Sunni minority. Mr. Maliki, political experts say, cannot afford to alienate fellow Shiites ahead of the general elections in December.

Ahmad Chalabi, a Shiite politician who led the push six years ago to purge Iraq of the Baath Party, said that despite Mr. Maliki’s pragmatic efforts to court Sunni support, the prime minister retained a visceral hatred for everything associated with the Baath Party and the brutal former regime. Mr. Maliki is also suspicious of bringing back some of the Sunni old guard, which Mr. Chalabi says is part of an American plan “to stiffen Iraq into opposing Iran and help integrate Iraq back into the Arab fold.”

From Washington’s point of view, reconciliation with approachable Baathists would isolate extremists like Mr. Douri’s followers. There lies the fundamental difference with the Iraqi side, which is shackled by its fears. “The mere ideas of the Baath Party are dangerous because they are about conspiracies, infiltration and coups,” Kamal al-Saedi, a member of Parliament and one of Mr. Maliki’s partisans on the government’s reconciliation committee, said Wednesday.

Mr. Maliki’s adviser for reconciliation, Mohammed Salman al-Saady, said he knew nothing of those promises, but he acknowledged that Mr. Maliki’s government had “fundamental differences” with Washington over how far to extend reconciliation.

Mr. Saady said the talks with General Hamdani stalled because many of his demands were against government policy. “According to the Constitution, holding negotiations with the Baath Party is a red line that cannot be crossed,” Mr. Saady said. But he underscored the government’s readiness to engage Baathists who renounced their party affiliation and accepted accountability for crimes they might have committed.

Today, the hopes that those civilian militias inspired are gone, brushed away by the realization that Pakistanis can do little to stem the Taliban advance if their government and military will not help them.

The peace deal the military struck with the Taliban in February in neighboring Swat further demoralized people in Buner. Residents and local officials said they asked themselves how they could continue to resist the Taliban when the military had abandoned the effort. The Taliban were emboldened by the deal: it called for the institution of Shariah, the strict legal code of Islam based on the Koran, throughout Malakand Agency, which includes Swat and Buner. It allowed the Taliban amnesty for their killings, floggings and destruction of girls schools in Swat.

Still, when the Taliban rolled into Buner from Swat through the town of Gokan on April 5, a well-to-do businessman, Fateh Mohammed, organized another posse of civilian fighters to take on the militants in the town of Sultanwas. Five civilians and three policemen were killed, he said. Some newspaper reports said 17 Taliban were killed.

At that point, the chief government official in charge of Malakand, Mohammed Javed, proposed what he called peace talks. Mr. Javed, an experienced bureaucrat in the Pakistani civil service, was appointed in late February as the main government power broker in Malakand even though he was known to be sympathetic to the Taliban, a senior government official in North-West Frontier Province said. The government had been under pressure to bring calm to Swat and essentially capitulated to Taliban demands for Mr. Javed’s appointment, the official said.

In an apparent acknowledgment that Mr. Javed had been too sympathetic to the Taliban, the government announced Saturday that he had been replaced by Fazal Karim Khattack.

In what some residents in Swat and now in Buner say had been a pattern of favorable decisions led by Mr. Javed on behalf of the Taliban, the talks in Buner turned out to be a “betrayal,” said a former police officer from the area, who was afraid to be identified.

To bolster their strength, and insinuate themselves in Buner, the Taliban also relied heavily on the adherents of a hard-line militant group, the Movement for the Implementation of the Shariah of Muhammad, which has agitated for Islamic law in Pakistan. Their leader, Sufi Mohammed, comes from the region around Swat and Buner and has whipped up local support and intimidated Taliban opponents.

early last week the Taliban showed their power by ordering the state courts shut. They announced that they would open Islamic courts, practicing Shariah, by the end of the month. The militants have also placed a tax payable to the Taliban on all marble quarried at mines, said a senior police officer who worked in Buner.

The police were so intimidated they mostly stayed inside station houses, he said. “They are setting up a parallel government.”

With their success in Buner, the Taliban felt flush with success and increasingly confident that they could repeat the template, residents and analysts said. In the main prize, the richest and most populous province, Punjab, in eastern Pakistan, the Taliban are relying on the sleeper cells of other militant groups, including the many fighters who had been trained by the Pakistani military for combat in Kashmir, and now felt abandoned by the state, they said.

It would not be difficult for the Taliban to seize Peshawar, the capital of North-West Frontier Province, by shutting down the airport and blocking the two main thoroughfares from Islamabad, a Western official with long experience in the province said. At midweek, a convoy of heavily armed Taliban vehicles was seen barreling along the four-lane motorway between Islamabad and Peshawar, according to Mr. Sherpao, the former minister of the interior.

Across North-West Frontier Province, the Taliban are rapidly consolidating power by activating cells that consisted of a potent mix of jihadist groups, he said.

On Friday, Odierno's predecessor, General David Petraeus, told the US Congress that, despite spasms of deadly violence, attacks across Iraq were down from 160 a day during the peak of the sectarian chaos three years ago to 10 to 15 a day now.

He also claimed that four recent suicide bombings had been carried out by Tunisian insurgents who had infiltrated Iraq. The claim marks the first acknowledgment for many months that foreign fighters continue to travel to Iraq. Both Iraqi and US officials had recently maintained that attacks were being carried out by homegrown extremists.

Ahead of her visit, Clinton echoed Maliki's concerns that the make-up of Iraq's new security forces was still sectarian. She said she would press for creation of a non-sectarian force.

Although all of the deaths so far have been in Mexico, the flu is spreading in the United States and suspected cases have been detected elsewhere: Eleven confirmed infections in the US In addition, eight suspected cases are being investigated at a New York City high school where about 200 students fell mildly ill with flu-like symptoms Ten New Zealand students are among a group which travelled to Mexico have tested positive for influenza A - making it "likely", though not definite, that they are infected with swine flu, said Health Minister Tony Ryall In France, a top health official told Le Parisien newspaper there were unconfirmed suspicions that two individuals who had just returned from Mexico may be carrying the virus But a UK hospital conducting tests for swine flu on a British Airways cabin crew member said the tests proved negative.

Public buildings have been closed and hundreds of public events suspended.

Schools in and around Mexico City have been closed until 6 May, and some 70% of bars and restaurants in the capital have been temporarily closed.

People are being strongly urged to avoid shaking hands, and the US embassy has advised visitors to the country to keep at least six feet (1.8m) from other people. Mexico's Health Secretary, Jose Cordova, said a total of 1,324 people had been admitted to hospital with suspected symptoms since 13 April and were being tested for the virus.

Mexico's President Felipe Calderon has announced emergency measures to deal with the situation. They include powers to isolate individuals suspected of having the virus without fear of legal repercussions.

In Spain, where the growth has been the most explosive, the foreign population rose to 5.2 million last year out of a total of 45 million people from 750,000 in 1999, according to the National Statistics Institute. Ireland’s population, now 4.1 million, was also transformed, with the percentage of foreign-born residents rising to 11 percent in 2006 from 7 percent in 2002.

Alcalá, a Madrid bedroom community and the birthplace of Miguel de Cervantes, is home to so many Romanian immigrants — 20,000 by some estimates — that Romania’s president, Traian Basescu, campaigned here for parliamentary elections last fall.

But signs of the reverse migration of Romanians are already evident. “Slowly, slowly, they’re disappearing,” said Gheorghe Gainar, the president of a Romanian cultural association in Alcalá. “When you look for them, you don’t find them. Sometimes you ask a relative, and they say they’ve gone back.”

The reverse exodus from more prosperous countries in Western Europe is likely to add to the economic pressures already buffeting Central and Eastern Europe, where migrants from developing countries are in turn being encouraged to leave. The Czech government announced in February that it would pay 500 euros, or about $660, and provide one-way plane tickets to each foreigner who has lost his job and wants to go home. And in Bucharest, Romania’s capital, workers from China have been camped out in freezing weather in front of the Chinese Embassy for two months, essentially stranded after their construction jobs disappeared.

Like the Czech Republic, Spain is offering financial incentives to leave. A new program aimed at legal immigrants from South America allows them to take their unemployment payments in a lump sum if they agree to leave and not return for at least three years. The Spanish government says only around 3,000 people have taken advantage of the plan, but many others are leaving of their own accord.

Airlines in Spain are offering deals on one-way tickets to Latin America, and they say demand has increased significantly. Every day, Barajas airport in Madrid is the setting for emotional departures, as families send their jobless loved ones back home.

Two suicide bombers struck within five minutes of each other on streets leading to the shrine of Imam Musa al-Kadhim and his grandson. One of the attacks, and perhaps both, were carried out by women, witnesses said.

Nearly half of those killed were Iranians making a pilgrimage to the shrine, a golden-domed landmark in the predominantly Shiite Kadhimiya neighborhood of Baghdad that is devoted to 2 of the 12 imams of Shiite Islam. At least 125 people were wounded, many of them also Iranians.

A loose coalition of Sunni militant forces, the Islamic State of Iraq, has claimed responsibility for carrying out many of the recent attacks.

The deadliest of the three bombings on Thursday struck a restaurant filled with Iranian travelers in Muqdadiya, a town in Diyala not far from the border. The toll in that attack rose to 56, with Iranians making up the majority of the dead. Over all, at least 89 people were killed in the bombings on Thursday, and more than 100 were wounded.

After the attacks on Friday, angry Iraqis who gathered amid the bloody debris blamed lax security and corruption of the police and government officials for what had happened. Some of their anger had a strongly sectarian cast.“They have been ruling us for 1,400 years,” said a Shiite army soldier who identified himself only as Abu Haidar, referring to the Sunni domination of Shiites in Iraq. “We took it over for four years, and they are slaughtering us.”

The Islamic State of Iraq, an umbrella insurgent group that includes Al Qaeda in Mesopotamia, says the recent attacks as part of a campaign called Harvest of the Good, which it announced in March.

In a statement distributed on extremist Web sites at the time, the group’s leader, Abu Omar al-Baghdadi, ridiculed President Obama as “Washington’s black man” and called his plan to withdraw American forces by 2011 an “implied avowal of defeat.”

On Thursday, Iraq’s military claimed to have arrested Mr. Baghdadi, but what was touted as a major success appeared to be in question. Extremist Web sites denied his arrest, according to the SITE Intelligence Group, which monitors claims and other statements by terrorist and extremist groups. The American military command also said in a statement that it could not confirm “the arrest or capture” of the leader, who the American military believes to be a fictitious Iraqi figurehead of a movement that includes many foreign fighters.

A senior national police official on Friday bluntly cited the limitations of Iraq’s security forces and their equipment for detecting explosives, typically hand-held wands used at checkpoints that the official described as fakes.

The pictures are similar to those from Abu Ghraib that in 2004 created shock around the world, caused a backlash in the Middle East and eventually led to jail sentences for the US military personnel involved.A US official said the pictures were not as bad as Abu Ghraib but "not good" either. The Abu Ghraib pictures showed Iraqi prisoners hooded, naked, posed in sexually embarrassing positions and being harassed by dogs.

Obama has consistently said he does not want to rake over history, fearing that it will deflect attention from his heavy domestic and foreign policy programme. But this week he opened the way for the prosecution of senior figures in the Bush administration and the establishment of a congressional inquiry.Amid the uproar this created, he has since been backing off. Both he and the Democratic leader of the Senate, Harry Reid, have signalled their unwillingness to hold a truth commission, but the Democratic leader in the House, Nancy Pelosi, appears ready to push ahead. With so much clamour for an investigation, it is almost certain that Congress will hold one, with or without the backing of the White House.

The release of the pictures has been sought by the American Civil Liberties Union (ACLU), a human rights organisation whose legal action forced publication of the Bush administration memos under freedom of information.

The pictures will increase pressure for pardons for military personnel who were punished for abuses at Abu Ghraib. Their lawyers are arguing that the Bush administration portrayed it as an isolated incident, whereas in fact it was widespread and approved at the highest levels."This will constitute visual proof that, unlike the Bush administration's claim, the abuse was not confined to Abu Ghraib and was not aberrational," said Amrit Singh, a lawyer for the ACLU.

The Bush administration, in blocking release of the pictures, had argued that they would create outrage but also that they would contravene the Geneva conventions obligation not to show pictures of prisoners.

About a quarter of a million petitions were delivered to the attorney-general, Eric Holder, yesterday calling for prosecution of Bush administration officials responsible for approving waterboarding and other harsh interrogation methods.

Matilda Gifford, 24, said she recorded the meetings in an attempt to expose how police seek to disrupt the legitimate activities of climate change activists. She met the officers twice; they said they were a detective constable and his assistant. During the taped discussions, the officers:• Indicate that she could receive tens of thousands of pounds to pay off her student loans in return for information about individuals within Plane Stupid.• Say they will not pay money direct into her bank account because that would leave an audit trail that would leave her compromised. They said the money would be tax-free, and added: "UK plc can afford more than 20 quid."• Accept that she is a legitimate protester, but warn her that her activity could mean she will struggle to find employment in the future and result in a criminal record.• Claim they have hundreds of informants feeding them information from protest organisations and "big groupings" from across the political spectrum.• Explain that spying could assist her if she was arrested. "People would sell their soul to the devil," an officer said.• Warn her that she could be jailed alongside "hard, evil" people if she received a custodial sentence.

In a statement last night, assistant chief constable George Hamilton said the force had "a responsibility to gather intelligence", and such operations were conducted according to the Regulation of Investigatory Powers Act (RIPA). The force would not comment on the identity of the officers.

"Officers from Strathclyde police have been in contact with a number of protesters who were involved with the Plane Stupid protests including Aberdeen airport," he said. "The purpose of this contact has been to ensure that any future protest activity is carried out within the law and in a manner which respects the rights of all concerned."