Arrow interceptor shortage exposed as Tehran fires hypersonic missiles at Tel Aviv, prompting U.S. to weigh deeper involvement.

Israel's attacks on missile infrastructure mean Iran now has to launch projectiles from further away, forcing it to rely on liquid-propellant weapons that are vulnerable to attack, an expert in missile technologies said.

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.