As a ceasefire brought calm to Gaza's ruined cities, Hamas was quick to emerge from hiding.The militant group has not only survived 15 months of war with Israel — among the deadliest and most destructive in recent memory — but it remains firmly in control of the coastal territory that now resembles an apocalyptic wasteland.

The ceasefire came into effect Sunday after an initial three-hour delay, during which almost 20 more Palestinians were killed, according to medics in the decimated Palestinian territory. Under the terms of the deal,