Khalid Sheikh Mohammed, the alleged mastermind behind the September 11, 2001 attacks, has agreed to plead guilty as part of a plea deal with U.S. prosecutors. Along with two accomplices, Walid Muhammad Salih Mubarak Bin 'Attash and Mustafa Ahmed Adam al Hawsawi, he is expected to enter the plea at Guantanamo Bay, potentially avoiding the death penalty. The plea agreements come after a lengthy legal process spanning more than 16 years since their prosecution began. While the specific terms of the deals have not been disclosed, it has been reported that they will plead guilty to conspiracy charges in exchange for life sentences. The attacks resulted in nearly 3,000 fatalities, marking the deadliest terrorist incident in U.S. history. The resolution of this case represents a significant step in a long-delayed judicial process concerning the tragic events of 9/11.