Hamas says it will only release an American-Israeli hostage and other hostages if Israel implements the existing ceasefire agreement in Gaza. Hamas demands the release of more Palestinian prisoners in exchange for the hostages. Israel has cast doubt on Hamas' offer and has not yet responded. The United States has presented a proposal to extend the ceasefire, but Hamas is making impractical demands in private negotiations. The war has caused significant destruction in Gaza and the population is heavily dependent on international aid.