The mullahs of Iran significantly ratcheted up their conflict with Israel on Tuesday, when, for the second time in less than six months, they launched a direct missile attack against the Jewish state, which threatens to plunge the region into a much broader war.

As Israelis once again emerge from their bomb shelters, the big question is whether Jerusalem will be able to upend a security situation that has seen it simultaneously dealing with threats from all sides — and whether its western allies will continue to sit on the sidelines as the Jewish state stands alone against a terrorist threat that imperils us all.