He was told not to. There is no doubt this will last a long time. Iran will trigger all sorts of insurgencies and terror cells in the region and it would not surprise me in the slightest if there were incidents in the US and elsewhere. There is next to no chance of regime change without land warfare and there is no possibility of domestic resistance leading to regime change. It is an utter shitshow and then only off ramp I can see for the US is a series of tit for tat exchanges at a lower level, mostly on merchant vessels.