With Hezbollah’s Iranian patron on the ropes, Jerusalem gets another shot at completing the job it was forced to pause two years ago. It took barely 48 hours after the United States and Israel began their joint operation against the Iranian regime for Hezbollah to fire rockets at Israel. As it became clear that regime decapitation was part of the operation’s objectives, the group’s involvement was all but inevitable. Israel retaliated immediately with a wave of targeted strikes and has now begun limited ground operations in south Lebanon, even as its air force maintains an unprecedented tempo of sorties over...