Two weeks ago, a pair of FBI agents appeared unannounced at the door of a member of the defence team for one of the men accused of plotting the 9/11 terrorist attacks. As a contractor working with the defence team at Guantánamo Bay, Cuba, the man was bound by the same confidentiality rules as a lawyer. But the agents wanted to talk. (..)

With that signature, bin al-Shibh‘s lawyers say, the government turned a member of their team into an FBI informant.