Washington says it acted after observing Iran was planning to deploy fresh mines in strait of HormuzThe US and Iran have exchanged fire for the first time in a month, with missiles and drones fired at Iranian rocket launchers on an island in the strait of Hormuz, and Iran targeting US military bases in Jordan and the United Arab Emirates in response.The US president, Donald Trump, on Monday threatened further action. The US is to trying to prise open Tehran’s grip on shipping going through the