Iran’s armed forces headquarters has declared it is ready to close the Strait of Hormuz indefinitely if US President Donald Trump carries out a threat to bomb Iran’s power plants. Its statement Sunday is the latest warning from Tehran of retribution for any attacks on the country’s power industry. Trump said Saturday he would order the bombardment of such infrastructure if the Strait of Hormuz was not fully open to shipping within 48 hours. Iran’s military responded Sunday that if the US threats regarding Iran’s power plants are carried out, the Strait of Hormuz will be completely closed and will...