If we go to war with Iran, it will be reminiscent of the first gulf war and not the second. The vast majority of military casualties during the second gulf war occurred during occupation. We won't be occupying Iran, Obama won't do it. At worst we'll get a Bush 1 type invasion, quick in and out where we lost less than 400 coalition troops. Leaving them completely neutered and crippled with no fly zones and extreme oil for food type sanctions. Best case scenario we let Israel drop a few bombs. Iran don't want it either way.
The people I feel bad for are the Iranian citizens, they're getting fukked.