Speaking on condition of anonymity, the US State Department official also told T2N2 that chances of a military showdown with Iran were "absolutely zero".
The comments came ahead of Friday's deadline set by the UN Security Council for Tehran to freeze uranium enrichment work as a confidence-building measure.
"With President George W Bush already facing a slide in popularity over the fiasco in Iraq, do you think he will dare to even think of a repeat in Iran."
According to the official, the best friends of both of the President's daughters are from Tehran. Plus, Bush loves Iranian food and has many friends from the country.
"Bush has several icecream buddies in Iran. There's no chance he will actually jeopardize their friendship for some rotten nuclear activity which is unlikely to bear fruit anyway.
"So why the posturing? As a world superpower, the US needs to assert its presence and bully other countries. It's only bark, no bite."
Meanwhile, reports of several Iranian restaurants in the US capital pulling down their shutters have sent White House officials into a tizzy. (T2N2)