Yemen's Houthi rebels targeted two U.S. Navy warships with multiple drones and missiles as they were traveling through the Bab el-Mandeb Strait, but the attacks were not successful, the Defense Department said Tuesday.

The attack on the ships was the latest in months of violence in the region by the Yemen rebels, who are backed by Iran and have targeted commercial shipping as well as the U.S. naval forces deployed to the region.

Houthis attacked US vessels, which the Pentagon said included eight drones, five anti-ship ballistic missiles, and three anti-ship cruise missiles.