Hamas said its delegation was heading to Cairo on Saturday to resume Gaza truce talks, as the United Nations warned that Israel’s threatened assault on the city of Rafah could produce a “bloodbath”.

Foreign mediators have been waiting for the Palestinian militant group to respond to a proposal to halt fighting for 40 days and exchange hostages for Palestinian prisoners.

“The only thing standing between the people of Gaza and a ceasefire is Hamas,” US Secretary of State Antony Blinken said on Friday.

Months of negotiations have stalled in part on Hamas’s demand for a lasting ceasefire and Israeli Prime Minister Benjamin Netanyahu’s repeated vows to crush the group’s remaining fighters in Rafah.

Blinken on Friday also reiterated Washington’s objections to the long-threatened Rafah offensive, saying Israel has not presented a plan to protect the civilians sheltering there.