srael said it bombed Houthi targets in Yemen on Sunday and mounted further airstrikes in Lebanon, expanding its confrontation with Iran’s allies in the region two days after killing the Hezbollah leader Sayyed Hassan Nasrallah.

The airstrikes on Yemen’s port of Hodeidah were a response to Houthi missile attacks on Israel in recent days, Israel said, amid fears that Middle East fighting could spin out of control and draw in Iran and the United States, Israel’s main ally.

The Houthi-run health ministry said at least four people were killed and 29 wounded.

The strikes took place as Israel attacked more targets in Lebanon, where its intensifying bombardment over two weeks has killed a string of top Hezbollah leaders and driven hundreds of thousands of people from their homes.

Lebanon’s Health Ministry said Israeli strikes on Sunday had killed at least 105 people, including 32 in Ain Deleb in the south and 33 people in Baalbek-Hermel in the northeast, and that 14 medics had been killed in air strikes over the past two days.