Ahead of Friday's attack on Iran, Israel had spent months smuggling in parts for hundreds of quadcopter drones rigged with explosives—as well as munitions that could be fired from unmanned platforms,

Iran on Friday night launched missiles and drones at Israel in a second response to airstrikes overnight that targeted nuclear sites and top commanders in the Islamic nation.

Iran retaliated by launching drones and later firing waves of ballistic missiles at Israel, where explosions lit the night skies over Jerusalem and Tel Aviv and shook the buildings below. The Israeli military urged civilians, already rattled by the raging Israel-Hamas war in the Gaza Strip, to head to shelter for hours.