The White House has sent an Israeli-backed ceasefire proposal to Hamas, press secretary Karoline Leavitt said Thursday, in the latest bid to quell fighting, free hostages and enable the flow of humanitarian aid to struggling Gaza.

The dispute over whether there should be a temporary ceasefire to release more hostages — as Israel has called for — or a permanent one — as Hamas wants — has bedeviled talks brokered by the U.S., Egypt and Qatar for more than a year and a half, and there’s no indication it has been resolved.