GAZA CITY, Gaza Strip – Israeli troops, some smiling and dancing, began to withdraw from Gaza Sunday after their government and Hamas militants declared an end to a three-week war. But neither side achieved long-term goals, and the burden of consolidating the fragile calm fell to world leaders.

The truce brought relief to Gaza’s citizens, who took stock of the devastation in relative safety for the first time since Israel launched the offensive on Dec. 27. And it brought more trauma, as rescue workers in surgical masks ventured into what were once no-go areas and pulled 100 bodies from buildings pulverized by bombs.

“We’ve pulled out my nephew, but I don’t know how many are still under there,” Zayed Hadar said as he sifted through the rubble of his flattened home in the northern town of Jebaliya.

Tension eased in southern Israel, the target of Palestinian rocket fire, even though Hamas launched nearly 20 rockets in a final salvo before announcing a cease-fire. Three Israelis were lightly wounded, while two Palestinians were killed in last-minute fighting, medics said.

Israel and Hamas do not recognize each other and ended up separately declaring cease-fires 12 hours apart after strenuous efforts by Egyptian mediators to get an agreement. Israel first announced a unilateral cease-fire that took effect early Sunday, with Hamas initially vowing to keep fighting until all troops left Gaza. Later Sunday, Hamas also said it would hold its fire to give Israeli forces time to pull out.

Alfred de Montesquiou contributed to this report