What is Israel's multi-layered defence against Iranian missiles?

(Reuters) -Israel has multi-layered air defences 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. Israel has been honing its air defences since coming under Iraqi Scud salvoes in the 1991 Gulf War, in addition to receiving support from the U.S., which has provided its ally with