Richard Haass
He has been president of the Council on Foreign Relations since July 2003, prior to which he was Director of Policy Planning for the United States Department of State and a close advisor to Secretary of State Colin Powell.
The Senate approved Haass as a candidate for the position of ambassador and he has been U.S. Coordinator for the Future of Afghanistan. He succeeded George J. Mitchell as the United States Special Envoy for Northern Ireland to help the peace process in Northern Ireland, for which he received the State Department's Distinguished Service Award.
At the end of 2003, Mitchell Reiss succeeded him as special envoy. In late 2013, Haass returned to Northern Ireland to chair inter-party talks aimed at addressing some of the unresolved issues from the peace process such as parades, flags and "the past".
Oh and he is a Republican (Make that a RINO)