Donald Trump's constantly shifting justifications for the military assault on Iran have left Pentagon officials scrambling to determine whether they should be preparing for a prolonged occupation or a swift exit from hostilities.According to the Wall Street Journal, Trump alternates between claiming the strikes target Iran's nuclear program and then later insisting the primary objective is regime change.Journal reporters Michael R. Gordon and Alexander Ward document the chaos: "The whiplash-inducing statements over the past two days come as the U.S. and Israel have carried out an extensive air campaign in Iran, prompting Tehran to retaliate against regional bases where American and European troops are present, as well as Gulf countries." Trump acknowledged in a Sunday video that prolonged U.S. military presence increases the risk of casualties, stating: "That's the way it is, but we'll do everything possible where that won't be the case." Multiple analysts suggest the inconsistency reflects White House improvisation rather than a coherent strategy.Justin Logan, defense and foreign-policy director at the libertarian Cato Institute, attributed the confusion directly to Trump's erratic leadership: "The administration—and the president—have hardly been the model of clarity on this war. It looks like they are making it up as they go along. The present policy looks more like incoherence."If destroying Iran's missile factories and nuclear facilities represents the core objective, the military could potentially reduce force levels relatively quickly, even if Iran's political future remains uncertain. However, if facilitating regime change is a priority, the operation would likely become a far longer and more demanding undertaking.There is also the possibility that Trump's military campaign fails to overthrow the regime and his diplomatic efforts similarly collapse. Former U.S. Middle East negotiator Aaron David Miller warned of that scenario, explaining, "Trump could find himself with no regime change, no deal and no capacity to honor the promises he's made to the Iranian people."You can read more here.