The war in Gaza has settled into a mind-numbing pattern of violence, bloodshed, and death. And everyone is losing—except Hamas. When Israel invaded the territory last fall, its stated military objective was to destroy the terrorist group so that it could never again commit acts of barbarity like the ones it carried out during its October 7 attack. But although the war has culled Hamas’s ranks, it has also vastly increased support for the group—among Palestinians, throughout the Middle East, and...