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.

Yemen’s Houthi rebels targeted two San Diego-based destroyers with multiple drones and missiles as they were traveling through the Bab el-Mandeb Strait in the Red Sea, but the attacks were not successful,

The San Diego-based destroyers USS Spruance and USS Stockdale on Monday repelled missile and drone attacks launched against the warships by Iran-backed Houthis during an incident in the Red Sea, according to the Pentagon.

U.S. fighter jets carried out an attack on Iranian-backed Houthi rebels in the Red Sea. The Houthis launched a barrage of at least eight drones, five anti-ship ballistic missiles, and three cruise missiles,