Veteran diplomat Richard Holbrooke has died

As ABC's Jake Tapper first reported, Richard Holbrooke, President Obama's special envoy to Afghanistan and Pakistan, has died. Holbrooke, a longtime Washington diplomat who served as ambassador to the United Nations under President Clinton, was rushed to the hospital Friday after suffering a torn aorta.

Earlier tonight, Obama praised Holbrooke at a gathering of diplomats in Washington, calling him "a tough son of a gun." "He is certainly one of the giants of American foreign policy," Obama said.

(Photo of Holbrooke by Gurinder Osan/AP)