Israeli troops pull back but maintain a watchful eye on the tens of thousands of Gazans who had been displaced during the 15 months of fighting.

Israel and Hamas reached a deal to resolve a disagreement over the exchange of a female civilian hostage that had threatened to derail the truce. Lebanon, however, saw the deadliest day since Israel’s truce with Hezbollah took effect.

The opening was delayed for two days over a dispute between Hamas and Israel, which said the militant group had changed the order of the hostages it released in exchange for hundreds of Palestinian prisoners.