Iran cant possibly be tricking themselves into believing that they could handle a war with us, could they? It seems they are not only prepared to see if they can match our military might but are willing to by ignoring sanctions.
I cant see any way we should go to war with Iran right now because it would stretch us way to thin militarily and economicly. Add to that they are allies with China for sure and Russia most likely it would not be a good idea. But lets be realalistic they could not hold a candle to us.