Meanwhile in London, Amnesty International opened a three-day conference Saturday on human rights, prevention of torture and detentions. Amnesty said it was the largest gathering of former Guantanamo detainees and their families held yet. Former Guantanamo detainee Moazzam Begg spoke to Amnesty ahead of the conference. “The people who claim to be the upholders and defenders of freedom are debating now whether it is legitimate to use torture,” said Begg. “After all of what the world has been through arguing against the fact. And if it does in one way or another become legitimised, either mental torture or physical or psychological, which has been clearly used by several countries, then I think the world will spiral into something that nobody will be able to control.”