Three hostages freed by Hamas reunite with their families in Israel as a ceasefire between the Israeli army and the militant group begins. The initial 42-day truce -- which follows more than 15 months of war -- will see the release of 33 hostages held in Gaza, in return for around 1,900 Palestinian prisoners detained by Israel. Ninety Palestinians were freed as part of the first hostage-prisoner swap of the truce's first phase.