It’s hard to be optimistic about the future of Gaza. The cease-fire agreement brokered by the Trump administration is holding, but Israel continues to occupy more than half of the territory, and its forces have killed more than 350 Palestinians since the truce was reached on Oct. 10. Hamas, meanwhile, is resurging in Gaza—replacing key commanders killed in the two-year war with Israel; executing its Palestinian opponents; and hiding weapons and fighters in its tunnel system, more than half of which remains intact. So, where does that leave Palestinians and Israelis? And what does it mean for the rest of...