Netanyahu is using the war to shore up his shaky grip on Israel’s domestic politics as well. By law, the prime minister’s coalition needs to pass a budget by the end of this month in order to avert mandatory new elections. For a time, Netayahu seemed likely to miss this deadline. The reason: The ultra-Orthodox parties, which hold 18 of the coalition’s 64 seats, refused to back the budget unless the prime minister passed legislation officially exempting yeshiva students from military service.