{Ambassador killed in Libya served U.S. for 20 years|compound attack in Benghazi “It’s especially tragic that Chris Stevens died in Benghazi because it is a city that he helped to save,” President Obama said at the White House|Consulate in Libya had represented U.S|interests in the nation under two presidents and worked as a diplomat for more than 20 years|During the 2011 revolt against Qaddafi, he was one of the last American diplomats to stay in the capital city of Tripoli and after the embassy was closed, he was appointed to head the U.S|After working for the Senate Foreign Relations Committee staff for Sen|ambassador died of asphyxia As deputy chief of mission in Libya, Stevens wrote several confidential cables back to Washington, describing the bizarre behavior of Libyan strongman Muammar Qaddafi|