There are solutions other than war to nonproliferation.
Note - no boots on the ground wouldn't be a big limitation because in case of say ethnic violence, with Azerbaijani and Persian being the largest groups, or even just great social chaos, Turkey and Azerbaijan, are, as far as i understand, ready to bring their armies into the Iran's Azerbaijani populated provinces, which would leave Persians, who are many don't like that "Arab's Islam", in their provinces to their own devices, probably even restoring the monarchy with the Shah's son, which again would be a good outcome here.
Ultimately the choice of whether or not Iran gets to build a nuclear bomb is not up to them, and they're finding that out now.
- Israel bombed an Iranian Embassy
- Iran counterstruck Israel but relatively restrained and with warning
- Israel bombed several high ranking Iranians, especially those involved with the nuclear program
- Iran counterstruck Israel.
None of it had that much to do with America.