Nearly 3 million Americans served in the wars that followed Sept. 11. Three veterans reflect in The War Horse about what they saw, lost and still carry.
Opposition from the U.S. and Russia has raised doubts that countries meeting Friday will agree on international rules about the use of autonomous weapons.
Khalid Sheikh Mohammed, the accused mastermind of the 9/11 attacks, and three co-defendants are slated for a trial before a military tribunal in June 2028.