Hamas is seeking guarantees that a new U.S.-backed ceasefire proposal for Gaza would lead to the war's end, a source close to the militant group said on Thursday, as medics said Israeli strikes across the territory had killed scores more people.

Israel is intensifying military operations in one of the last Hamas strongholds in Gaza, as the sides stake out positions before ceasefire negotiations proposed by US President Donald Trump.

President Donald Trump said Tuesday that Israel had “agreed to the necessary conditions” to finalize a ceasefire in Gaza, though it was not immediately clear whether Hamas would accept the terms.