The strikes hit new neighborhoods in the capital, signaling the widening scope of Israel’s campaign against Hezbollah, even as U.S. officials hailed diplomatic efforts.

At least 18 people, including four children, have been killed in an Israeli air strike near Lebanon’s largest public hospital in southern Beirut, according to the Lebanese health ministry.

At least 63 people were killed in Israeli strikes on Lebanon over the last day, bringing the total death toll to 2,530, the Lebanese government said on Tuesday.