Americans, and indeed all people of goodwill, should be pleased to see that Israel finally has broken its 15-month political impasse. Amidst a global pandemic, jihadists might have misinterpreted instability in Israel as providing them with a chance to spark a conflagration without fearing effective repercussions from a stricken and distracted Western world. But now that three-time challenger Bennie Gantz has agreed to let Benjamin Netanyahu continue for 18 months as prime minister in a “unity government,” there will be no doubt that Israel itself can act against any aggression with solidarity and dispatch. Gantz and some but not all...