What was the official position of this American career diplomat who died during the attack in which Ahmed Abu Khattala participated in 2012?
Ahmed Abu Khattala:  He participated in the 2012 Benghazi attack on the American diplomatic mission at Benghazi, in which Ambassador J. Christopher Stevens and three other Americans were killed. J. Christopher Stevens: John Christopher Stevens (April 18, 1960 – September 11, 2012) was an American career diplomat and lawyer who served as the U.S. Ambassador to Libya from May 22, 2012 to September 11, 2012.
U.S. Ambassador to Libya