I don't think so. Yes, Muslims love suicide and martyrdom for Islam but they also believe Islam will conquer the earth. For that to happen, you need living Muslims and Muslim nations. If Muslims could annihilate Israel and the U.S. and also survive a counterattack, they would do so. As crazy as the Mullahs are, they understand that Iran and any other Islamic country would be turned into a glass parking lot it they struck Israel or the U.S. with nukes. This is what is holding them back.
Your mistake is that you are assigning logic and your values to the mullahs.