Trump is frustrated. He continues to tell us that the Iranian negotiating team has capitulated to all of his demands, but shortly thereafter, Iran launches new attacks on ships in the Strait of Hormuz. These people are crazy, and they negotiate in bad faith.
In all likelihood, of course, Trump is lying about the concessions made by the Iranian negotiators, but you can appreciate his frustration. Dealing with people who don’t keep their word and contradict in public what they say in private–he might as well be negotiating with himself.