Donald Trump said U.S. officials were holding "very good" talks with Iran and hinted that a deal on the Strait of Hormuz could be reached as early as today. But he warned that the U.S. would "hit Iran very hard" if Iran abandoned the deal. Iran denied direct talks with Washington, saying negotiations were only taking place through Oman on the issue of navigation in the Strait of Hormuz. Diplomats believe that reopening the waterway could help resume broader U.S.-Iran negotiations.