Related Clues:

• Trade grp. since 9/14/60
• Grp. affecting gas prices
• The U.A.E. belongs to it
• Intl. acronym since 1960
• Oil cartel
• Crude group?
• Grp. that has energy users over a barrel?
• Crude bunch?
• Oil grp.
• Cartel since 1960
• Grp. with crude interests?
• Fuel cartel
• Kind of minister
• Iraq is in it
• Syndicate since 1960