As Israel pounds Iran with airstrikes targeting military facilities and its nuclear sites, officials in Tehran have proposed a variety of steps the Islamic Republic could take outside of launching retaliatory missile barrages.

The U.S. says it wasn't involved in the strikes on Iran, but three American officials told NBC News the U.S. is assisting in shooting down Iranian missiles and projectiles targeting Israel.

Israel has launched blistering attacks on the heart of Iran’s nuclear and military structure, deploying warplanes and drones previously smuggled into the country to assault key facilities and kill top

Revolutionary Guards Commander Hossein Salami reported killed. Fears of war rise as nuclear talks stall. See Iranian facilities before and after.

Israel says preemptive airstrikes against Iran's nuclear sites are underway, and it is bracing to intercept a wave of drones launched by Iran in retaliation.

The simultaneous strikes represented the latest salvo since a surprise attack by Israel two days earlier aimed at decimating Tehran’s rapidly