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.

Nasrallah was killed in an Israeli airstrike on Friday. The Israeli official said the decision to assassinate Hezbollah's leader was made because Nasrallah declined diplomatic efforts in the last 11 months to separate the "northern front" -- Lebanon -- from the war in Gaza.

An Israeli strike on a mosque in the Gaza Strip killed at least 19 people, Palestinian officials said, as Israel intensified its bombardment of northern Gaza and southern Beirut.

At least 24 Palestinians were killed, and 93 others wounded in Israeli airstrikes on a mosque and school in Gaza, both housing displaced people. The Israeli military said they targeted Hamas militants operating from the locations as part of ongoing retaliation for Hamas’ October 7 attack.

An Israeli strike on a mosque in the Gaza Strip early Sunday killed at least 19 people, Palestinian officials said, as Israel intensified its bombardment of northern Gaza and southern Beirut in a widening war with Iran-allied militant groups across the region.

An Israeli attack on a mosque in the Gaza Strip early Sunday killed at least 19 people, according to Palestinian sources. The strike comes as Israel intensifies its shelling of northern Gaza and southern Beirut amid a growing confrontation with Iran-backed militant groups in the region.