'Very soon’: Trump predicts US victory in Iran war, says gas prices will tumble

US president Donald Trump said on Monday that the United States would win its war with Iran “very soon”, predicting that gas prices would tumble and oil prices would move sharply lower once the conflict ends, even as mediators worked behind the scenes to revive diplomacy between Washington and Tehran.“We're going to win, as far as I'm concerned, it's going to be one way or the other,” Trump told reporters in the Oval Office. “It's going to go pretty quickly.”Trump also linked the outcome of the conflict to energy prices, saying gas prices would “come tumbling down” after the United States wins the war.