ISTANBUL Israel has presented a counter-offer under which Hamas would release half of the live hostages and half of the dead hostages it is holding in Gaza in exchange for a 50-day ceasefire, Israel’s Channel 13 reported Sunday. The proposal comes after Israel rejected a mediator-backed offer to release only five hostages, including Edan Alexander, a US-Israeli citizen, the report said. Israeli estimates indicate that 59 captives remain in Gaza, including 24 who are alive. Meanwhile, Israel is