Terrible news: 

U.S. Ambassador to Libya John Christopher Stevens and three other American diplomats were killed Tuesday in an assault on the American consulate in the eastern city of Benghazi, the White House said Wednesday.

Wire services and reporters on the ground said that Stevens and the others were fleeing the consulate when a rocket-propelled grenade struck their vehicle. Al-Jazeera’s correspondent in Benghazi said the bodies of the dead had been taken to the Benghazi airport.

Stevens, a longtime Middle East hand in the State Department, was named ambassador to Libya in May. He had worked in Libya for a number of years, both before and after the fall of slain Libyan leader Moammar Gaddafi. The other dead were not identified ...