Ten days after the signing of the Trump administration’s memorandum of understanding with Iran, the two sides are battling again for control of the Strait of Hormuz and accusing each other of violating their agreements. On social media, President Donald Trump said, “There may come a point when we are no longer able to be reasonable and will be forced to militarily complete the job that we very successfully started. If that happens, the Islamic Republic will no longer exist.” NBC’s Keir S