Trump, at a rally before thousands of supporters in Pensacola, Florida, laid out an aggressive national security policy with a beefed-up US military "so strong that nobody's going to mess with us."
He talked tough about how he would respond to any Iranian harassment of American ships in the Gulf. A US Navy coastal patrol ship changed course after an Iranian fast-attack craft came within 100 yards (91 meters) of it on Sunday. It was the fourth such incident in the past month.