Khalid Sheikh Mohammed could help 9/11 families in Saudi Arabia lawsuit if death penalty dropped: Letter
July 29, 2019 at 17:02 PM EDT
KSM has been held for nearly 13 years at the U.S. military base in Guantanamo, Cuba, where he and four other accused al-Qaeda terrorists are charged with war crimes related to the Sept. 11 attacks. A trial has not been scheduled yet.