Hamas says it will release Israeli American Edan Alexander, held hostage in Gaza / Israeli hostages bond through horror of Hamas captivity / Freed Israeli hostage feared the 'many ways to die' in Gaza but kept hope alive / 'Part of us is still in Gaza': Freed Israeli hostages fight for a new ceasefire / Israel's PM threatens to seize territory in Gaza if hostages aren't freed / Freed Israeli hostage held onto faith to get through months of captivity in Gaza / Who are the Gaza hostages whose bodies have been returned to Israel? / Who are the hostages freed by Hamas as part of the ceasefire in Gaza? / Families of hostages take to streets in plea for release of Gaza hostages - as Israel marks 500 days of war with Hamas