If justice consists in convicting the guilty using established norms and fair procedures, Gitmo has been an unjust unhumanitarian disaster.

A federal appeals court has canceled plea deals with three men accused of orchestrating the 9/11 attacks, deepening the legal morass surrounding the long-stalled case.

The deal, negotiated over two years and approved by military prosecutors and the Pentagon’s senior official for Guantanamo Bay, Cuba, a year ago, stipulated life sentences without parole for ...