[Edward]

This won't end quickly. Iran will try to develop nuclear weapons to line up with all the other 1st world countries. When that happens, we can't stop full-out war. The US will be afraid that Iran will fire and kill millions of citizens in the US or any other UN or Non-UN nation. Therefore, they will attack first with invasion of military troops and later on J-DAMs and the Air-Force.

Why would we invade via ground first? Standard tactics is to bomb first.

And no, we won't. Everyone in every country knows that if they fire a nuke, their country will no longer be on the map.

Yep. Mutually assured destruction.