[1] How can we be sure? From [2] AP, with thanks to Jeffrey Imm:

PARIS — The United States has agreed to hand over to France the last three French detainees at the U.S. naval base at Guantanamo Bay, Cuba, judicial officials said Tuesday.

The agreement was finalized just as Secretary of State Condoleezza Rice was to arrive in Paris for a meeting with President Jacques Chirac, the officials said on condition of anonymity.