American forces have been operating in the air, at sea, and on land to counter what Israeli military sources described as a sustained Iranian response to Israeli strikes.

The U.S. military has helped shoot down Iranian missiles that were headed toward Israel, two U.S. officials said on Friday.

The US military is helping intercept missiles that Iran fired in retaliation at Israel, a US official says. The US has been moving assets nearer to Israel to assist in missile intercepts and to provide better protection of US bases in the region.

Because the missiles were part of a US $7.4 billion arms package approved by Congress in February, the transfer required no new notification.

Israel has multi-layered air defenses against attacks by Iran, which has fired hundreds of ballistic missiles and suicide drones at Israel over the past two days as the Middle East rivals traded heavy blows.

As Iran fires masses of ballistic missiles, Israel’s vaunted air defenses are being tested like never before.Iran launched around 200 such missiles at Israel on Friday night — in retaliation for a wave of Israeli strikes that day — and 70 or so on Saturday evening,

For many years, the Iron Dome has repelled missile attacks from Hamas and Hezbollah. Two experts explain how Iranian missiles have punctured Israel’s defence

When it comes to missile defense, you can't afford to gamble—standard doctrine may call for firing two or three interceptors per threat, but with modern missile swarms and decoys, it's a long shot at best.

Iran has launched more than 370 ballistic missiles toward Israel, a barrage not seen in years. Most were intercepted, but 30 slammed into Israeli cities, leaving 23 civilians dead and nearly 600 wounded.