In Lebanon, which is still reeling from last year’s war between Israel and the Hezbollah militant group, videos making the rounds on social media have shown revelers dancing and drinking on rooftops while projectiles flash across the sky in the background.

A number of missiles were launched from Iran towards Israel, some were intercepted and one fell in an open area. American THAAD batteries participated in the interception.

Experts say Iran has fired about 700 of its medium-range ballistic missiles, leaving it with anything between 300 to 1,300 left in its stockpile.

Truckloads of aid are on their way to the city of Bat Yam, south of Tel Aviv — where at least nine Israelis were killed by a missile strike on Sunday — as well as Haifa and other communities targeted by Iran’s ferocious missile barrage over the past four days.

Israel’s air defenses—a multilayered system that includes the famed Iron Dome—are among the best in the world and the most battle-tested, but even so they aren't completely impenetrable, Israeli officials and air-defense experts say.

Iran and Israel have launched a fresh wave of attacks on each other in a development that continues to raise fears of the wider region being plunged into a destabilising conflict. Iranian missiles struck Tel Aviv and the port city of Haifa shortly before dawn on Monday,

Iran's nuclear program will be hard to dismantle, but Israel has increased its superiority in missile and air defence capabilities