DUBAI, United Arab Emirates — The Israel-Hamas war, now nearing a potential ceasefire, has devastated the Gaza Strip. Satellite photos offer some sense of the destruction in the territory, which has been largely sealed off to journalists and others.

In truth, the first phase of the deal is relatively easy to implement and gives all parties a respite from draining conflict. After the six-week ceasefire, any extension will depend on the success of future negotiations,