Historical clue formulations

• Arab chiefs — 2026-09-06
• Arabian V.I.P.'s — 2010-11-01
• Some oil barons — 2007-01-14
• Powerful, alluring men — 2005-07-01
• Some oil-rich people — 2002-07-04
• Some oil barons — 1997-08-30
• Arab leaders — 1997-03-17