As the delicate ceasefire between Israel and Hamas takes hold, some aid has begun flowing into the Gaza Strip, where many Palestinians are returning home and beginning to reckon with the destruction caused by the two-year conflict.

Hamas will need more time to recover hostages’ remains still in Gaza, two senior U.S. advisers have said, as Israel’s military began to prepare for the possibility of renewed fighting amid anguish and anger about delays in the return of abductees.