| Answer | Crossword Clue |
|---|---|
| OPEC | Vienna-based cartel |
| OPEC | Cartel based in Vienna |
| OPEC | Oil cartel based in Vienna |
| OPEC | Cartel headquartered in Vienna |
| OPEC | Vienna-based org. |
| OPEC | Vienna-based grp. |
| AOL | Co. based in Vienna |
| OPEC | Vienna-based commercial gp. |
| OPEC | Vienna-based oil org. |
| OPEC | Org. based in Vienna |
| OPEC | Vienna-based trade bloc |
| OPEC | Vienna-based grp. with no European members |
