Clarifying the alert over northern Israel on Monday, the IDF spokesman said that Syrian SS-21 air defense missiles were detected flying from east to west and calculated to strike Israel east of the Sea of Galilee. These missiles have a 100km range and each carries a 500km warhead. The IDF decided to intercept them while still in flight and ordered a David’s Sling battery into action. But then, new calculations found the Syrian projectiles’ trajectory would come short of Israeli air space. At that point, one of the David’s Sling missiles was ordered to self-destruct. A second went missing.