| Answer | Crossword Clue |
|---|---|
| RIAL | OPEC nation currency |
| RIALS | Some OPEC currency |
| LIBYA | OPEC nation |
| IRAN | OPEC nation |
| UAE | OPEC nation |
| UAE | OPEC nation (abbr.) |
| QATAR | Smallest OPEC nation |
| NIGERIA | Most populous OPEC nation |
| ANGOLA | OPEC nation since 2007 |
| OMAN | Oil-rich non-OPEC nation |
| OMAN | Arab nation that's not in OPEC |
| OMAN | Oil-rich nation that's not in OPEC |
| ECUADOR | First nation to drop out of OPEC |
