Hamas has demanded an end to the war for the release of hostages, while Israel insists on ending fighting only after all hostages are freed and Hamas is dismantled.

Talks aimed at securing a ceasefire in Gaza are stalling over the extent of Israeli forces' withdrawal from the Palestinian enclave, Palestinian and Israeli sources familiar with the negotiations in Doha said on Saturday.

Hospital officials say Israeli airstrikes have killed at least 28 Palestinians in Gaza including four children.