Trump's Iran Ceasefire Extension, the U.S. Blockade, and the Strait of Hormuz

Donald Trump says the regime in Tehran is fractured, so the U.S. will hold off further strikes until its leaders "can come up with a unified proposal." What kind of a nuclear deal would be a U.S. victory that's worth accepting? Plus, as the White House ousts Navy Secretary John Phelan, who would be a worthy replacement?