Thanks to an anti-freedom group for the map showing why the little guy and his imams are upset with the US.
Iran blusters well, but a two front confrontation, diplomatic or military, may be beyond their abilities which is why Iran is bluffing big. As they put pressure on Syria, Saudi Arabia, Lebanon, Egypt, Pakistan and the others, the US is working to isolate them by the same means.
For a starting point the US has troops and bases in Saudi Arabia, Iraq, Kirgizstan, Diego Garcia, Oman, and Afghanistan. The US is working with other countries in the region.
Will entreaties of "nuclear power" by Iran to oil based economy countries be enough to tip the balance to them?
Looking at the recent voting in Iran I don't think it's just the little guy that is nervous in Iran.