"Israel's policy is consistent and has not changed. Israel demands the release of all 50 hostages in accordance with the principles established by the cabinet for ending the war. We are in the final decisive stage of Hamas and will not leave any hostage behind," an Israeli political source said.

Israel is studying Hamas' response to a Gaza ceasefire proposal for a 60-day truce and the release of half the hostages still held in the enclave, two Israeli officials said on Tuesday, although one source reiterated that all Israeli captives must be freed for the war to end.