Israeli officials are planning to wage war against Hamas for several months to come, without interruption, despite—or, in some ways, because of—widespread calls for a cease-fire. At a recent sit-down with Israeli reporters, Defense Minister Yoav Gallant outlined what he saw as the “four phases” of the war. The second phase—the “expanded ground activity” that started last week, with Israeli troops and fighter jets closing in on Gaza City, destroying Hamas’ vast network of tunnels and killing its commanders—will go on, Gallant said, “for months.” In the third phase, Israeli troops will hunt down “pockets of resistance” and prepare to...