Instead of grappling with this dilemma, the Trump administration appears to be making it more acute. As the prospect of near-term regime change fades, both the United States and Israel seem to be flirting with fomenting internal fragmentation as a fallback. Reports indicate that the CIA is arming Iranian Kurdish militia forces in northern Iraq, while Israel bombs frontier posts, police stations, and military positions along the northern Iran-Iraq border to clear a path. In recent days, Trump has suggested he is backing away from this scheme, but Israel has not. Indeed, Israeli leaders seem to view the destabilization of Iran as a preferable backup if regime change proves impossible, potentially pushing Iran into the kind of state fragmentation seen in Libya, Syria, and post-2003 Iraq. In a country of 90 million people at the crossroads of Eurasia, that outcome would be profoundly destabilizing, not just for Iranians but for U.S. interests in the region and beyond.

From: https://www.foreignaffairs.com/iran/what-endgame-iran