Iran gave the U.S. a new proposal to reopen the Strait of Hormuz and end the war, with nuclear negotiations postponed for a later stage, according to a U.S. official and two sources with knowledge. Why it matters: The diplomacy is in a stalemate and the Iranian leadership is divided about what nuclear concessions should be on the table. The Iranian proposal would bypass that issue en route to a faster deal. But lifting the blockade and ending the war would remove President Trump's leverage in any future talks to remove Iran's stockpile of enriched uranium and convince Tehran to suspend enrichment — two primary war objectives for Trump. What to watch: Trump is expected to hold a Situation Room meeting on Iran on Monday with his top national security and foreign policy team, according to three U.S. officials. One source said Trump's team would discuss the stalemate in the negotiations and potential next steps.…