U.S. ambassadors who have died in attacks in the line of duty

John Gordon Mein, Guatemala (Aug. 28, 1968)

Cleo A. Noel Jr., Sudan (March 1, 1973)

Rodger P. Davies, Cyprus (Aug. 19, 1974)

Francis E. Meloy Jr., Lebanon (June 16, 1976)

Adolph Dubs, Afghanistan (Feb. 14, 1979)

Christopher Stevens, Libya (Sept. 11, 2012)

Read more on these ambassadors here, and follow our live blog on the attacks that killed Stevens here.