A narrow strip of scrubland and sand dunes on the Gaza side of the border with Egypt has emerged as a major obstacle in talks aimed at halting the Israel-Hamas war and freeing scores of hostages.

Israeli Prime Minister Benjamin Netanyahu says Israel must maintain control over the so-called Philadelphi corridor to prevent Hamas from replenishing its arsenal through a network of smuggling tunnels in the area. He says thats necessary to ensure the group can never again launch an attack into Israel like the one on Oct. 7 that ignited the war.

But many Israelis, including the defense minister, say Israel should relinquish the corridor, at least for a short period of time, in order to secure an agreement to bring back around 100 hostages still held in Gaza, about a third of whom are believed to be dead.

The debate reached a fever pitch this weekend after Israel recovered the bodies of six hostages that the military says Hamas killed as troops closed in. Critics say they could have been returned alive in a cease-fire deal and accuse Netanyahu of sabotaging the talks for his own political interests .

Hamas has demanded a full withdrawal from Gaza and says Netanyahu only raised the demand for the Philadelphi corridor in recent weeks to derail the talks.

Netanyahu blames Hamas for the lack of a deal and says the demand is not new.

Egypt, which has served as a key mediator, is also opposed to any Israeli presence along the Gaza side of its border and says it would threaten the decades-old peace treaty between the two countries, a cornerstone of regional stability.

What is the Philadelphi corridor and why does Israel want it?