Sorrow

(CNN) -- Chris Stevens knew what he was getting into.

He knew, longtime friend Daniel Seidemann said, that Libya was a place of great promise, but also one of great peril. "When he went to Libya, he had no illusions about where he was going," Seidemann said. "He has probably done more than anybody on the planet to help the Libyan people, and he know going in that this was not going to protect him."

U.S. Ambassador J. Christopher Stevens died Tuesday in an assault on the American Consulate in Benghazi, the very city where he had arrived aboard a cargo ship in the spring of 2011 to help build ties between the upstart rebellion and the rebels.

"He risked his life to stop a tyrant, then gave his life trying to help build a better Libya," U.S. Secretary of State Hillary Clinton said Wednesday.

"The world needs more Chris Stevenses," Clinton said.