Possible Clues:

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