Joseph Pisani, Laurence Norman, Shelby Holliday The U.S. military began a new round of strikes on Iran overnight Saturday after the country's Islamic Revolutionary Guard Corps hit a ship near the Strait of Hormuz. In response, Iran said it was retaliating against American military bases in neighboring countries. The renewed violence comes as Trump administration officials grow pessimistic about ongoing negotiations with Tehran and frustrated about Iran's continued attacks on Hormuz shipping.