Muhammad Ali's refusal to sign his Vietnam-era military draft card upended the boxing champ's life and added a powerful voice to the anti-war movement.
It's the latest development in the U.S. military's struggle to bring to justice the man charged with planning the Sept. 11 attacks on the United States.
The decision puts back on track agreements that would have the three men plead guilty in exchange for being spared the possibility of the death penalty.
