President Donald Trump has been crystal clear when it comes to Iran: They cannot be allowed to have a nuclear weapon. It's evident, based on actions taken by Israel and the administration's unwavering support of them, that both nations are in agreement on that and determined to ensure that Iran does not acquire such weaponry. 

President Donald J. Trump has never wavered in his stance that Iran cannot be allowed to have a nuclear weapon — a pledge he has made repeatedly, both in office and on the campaign trail.