Prayers and condolences to Mr. Holbrooke’s family…

ABC News has learned that Richard Holbrooke, the US Special Representative to Afghanistan and Pakistan, has died.

On Friday,¬†Holbrooke was rushed to the hospital with a torn aorta. He went through more than 20 hours of surgery. Earlier this evening, speaking at the US State Department, President¬†Obama sang Holbrooke’s praises and called him “a tough son of a gun.”

Holbrooke, 69, was a former ambassador to the United Nations and served as chief negotiator at the Dayton Peace Accords, which ended the war in Bosnia.