TRIPOLI, Libya (AP)-Libyan officials say the U.S. ambassador to Libya and 3 other Americans were killed in Tuesday's attack on the U.S. consulate in Benghazi. The officials say Ambassador Chris Stevens was killed when he and a group of embassy employees went to the consulate to try to evacuate staff. Violence at the consulate and at the U.S. Embassy in Cairo came in response to an anti-Muslim video.
