Iran said Sunday that it struck an unmanned U.S. military boat in the Strait of Hormuz, marking the latest exchange of fire between the countries after a month of relative calm.

Meanwhile, Israeli strikes in southern Lebanon killed four people and injured at least 20, including children, according to Lebanese authorities, near an area that has become a flash point in fighting between Israel and the Iran-backed militant group Hezbollah.

Here's a look at the news in the Middle East.