US Vice President JD Vance told Reuters that Iran must make a meaningful cut to its nuclear enrichment capacity, not just promise future reductions, to end the seven-month war, while admitting Washington is unsure how decisions are made in Tehran after the killing of Supreme Leader Ayatollah Ali Khamenei in the opening US-Israeli strikes. Iran, which says the real problem is mixed messaging from US officials, has traded proposals with Washington aimed at reopening the Strait of Hormuz (the narrow Gulf waterway through which much of the world's oil and gas ships), but President Donald Trump rejected its latest offer and has warned of intensified military action after November's midterm elections. The war, costing about $3 billion a month and driving up energy prices, has become a political liability for Republicans as they campaign to keep control of Congress.