Council foreign relations Brookings Institute, since 1995, trustee, since 1997, joint task force on resources for foreign affairs, independent task force on non-lethal weapons. Delegate North Atlantic Treaty Organization Headquarters and Field, 1998, 2003, delegate to Libya, 2005. Advisory board Remarque Institute New York University, 1997—2002, International Institute for Strategic Studies, since 2000.
Board directors Lincoln Center for Performing Arts, since 2002, trustee, member executive committee, since 2002. Council foreign relations Bretton Woods Committee, since 2003, Economic Club. Member oversight committee Milton Academy Mountain School, since 2004.
Director Sanford Bernstein Family of Mutual Funds, since 2005, Institute International Education, since 2007. Member Association Bar City of New York, Council Foreign Relations, Explorers Club, The River Club, Links Club, The Tuxedo Club, Century Association, The Metropolitan Club (Washington), Waccabuc Club.