Possible Clues:

• Former U.N. leader Annan
• He succeeded Boutros
• U.N. chief after Boutros
• Diplomat Annan
• Ex-UN chief Annan
• Ex-U.N. chief Annan
• 2001 Peace Prize sharer Annan
• First name in diplomacy
• Annan of the U.N
• Boutros's successor