Middle East/Gulf Wars

Middle-East/Gulf Wars. Which was the most influential conflict for the US?
1. Conflict with the Barbary Pirates
2. The Suez Crisis & Lebanon
3. Iranian Hostage Crisis
4. The Russian Invasion of Afghanistan
5. The Gulf of Sidra & Kadafi
6. The Tanker War
7. Gulf War I (Liberation of Kuwait)
8. Afghanistan
9. Gulf War II (Iraq)
10. Strait of Hormuz & Iraq

If you consider all the dominoes that flowed from the Revolution in Iran, that has to be the most influential conflict in United States history.