Israel has repeatedly atacked Houthi areas in Yemen, including a naval strike in June. Both Israel and the United States have struck ports in the area in the past — including an American attack that killed 74 people in April — but Israel is now acting alone in attacking the rebels as they continue to fire missiles at Israel.

Israel’s military launched airstrikes early Monday targeting ports and facilities held by Yemen’s Houthi rebels, with the rebels responding with missile fire targeting Israel.