NEW: Russia's Defense Ministry says its air defenses have shot down four US-made AGM-188A Rusty Dagger cruise missiles over the past day, the first official Russian claim to have intercepted the weapon.

NEW: Russia's Defense Ministry says its air defenses have shot down four US-made AGM-188A Rusty Dagger cruise missiles over the past day, the first official Russian claim to have intercepted the weapon.

The AGM-188A Rusty Dagger is the design of Zone 5 Technologies under the US Air Force's Extended Range Attack Munition program, known as ERAM.