The US is telling its overseas allies that it has stopped "extraordinary renditions" and needs their help to empty Guantánamo's prison cells. But human rights groups dispute this assertion and a question mark hangs over 200 "war on terror" detainees who could be held indefinitely without trial.

European diplomats say Washington is reacting to pressure from parliamentary investigations, lawsuits from former prisoners, and calls by friendly governments, including the UK, to close Guantánamo, the prison camp at a US naval base in Cuba.