Iran has definitely crossed that line. National Security Council spokesperson John Kirby said Wednesday that a first shipment of Iranian drones had been "newly introduced to the fight" in Ukraine.Iran and Russia have also reportedly been collaborating to evade Western sanctions, a partnership that could undermine U.S. efforts both to impose costs for the Ukraine invasion and to convince Iran to return to compliance with the 2015 nuclear deal. A marriage of convenience can be much more durable than a romantic relationship