At least 10 firefighters have been killed in an Israeli air strike in a border area in southern Lebanon, the Lebanese health ministry says. A statement said the firefighters had been “ready to go out on rescue missions” from a municipal building in Baraachit when it was struck overnight.

The widening conflict risks drawing in the United States, which has provided crucial military and diplomatic support to Israel, as well as U.S.-allied Arab countries that host American forces.