Comment by 8fingerlouie

It takes one party to start a war, but it takes (at least) two to end it.

The war ends when all involved parties agree that it ends, not because one party is tired of it.

The only way the US alone can end the war in Iran is to ensure complete surrender, and then stay put for 20 years like Iraq and Afghanistan, only to leave like a thief in the night and things reverts to what they were before, only with more local hate for the US than was already there (as most islamic states sees the US as the great devil).

I think most European nations learned their lesson in Iraq and Afghanistan. None of those were NATO operations btw. Article 5 was invoked for Afghanistan, but the NATO contribution was limited to a naval operation and patrolling of US airspace. NATO is a defensive treaty, not an aggressive one. The actual ground invasion of both Afghanistan and Iraq was done by a US led coalition of the willing, and when the US started the Iran war, most european leaders openly declared that this was not europes war.