Hamas rejected on Saturday as insufficient offers made in Cairo to Palestinian negotiators seeking to end Israel's offensive in the Gaza Strip, and raised the possibility of renewed fighting when the current truce expires.
Israel said it had also not yet accepted any proposals made in the Egyptian-mediated talks but, like the Palestinians, its envoys continued attending them on Sunday.
The ceasefire concludes on Monday night.
Hamas, Gaza's dominant Islamist group, wants an Israeli-Egyptian blockade on the coastal enclave lifted, as well as the establishment of a seaport and airport, as part of any enduring cessation of hostilities with the Jewish state.
"Israel must accept the demands of the Palestinian people or face a long war," Osama Hamdan, the head of Hamas's foreign affairs, said on Facebook, according to Reuters.
‘Israel to prioritize security needs’
Israeli Prime Minister Benjamin Netanyahu said on Sunday any deal on Gaza's future at truce talks in Cairo must be contingent on Israel's “security needs,” warning Hamas against carrying out its threat of a long war if Palestinian demands are not met.
Netanyahu, in public remarks to his cabinet, said Hamas should not underestimate Israel's resolve to battle on.
"Only if there is a clear response to our security needs will we agree to reach understandings," he said.
Israel, which launched its offensive on July 8 after a surge in cross-border Hamas rocket attacks, has shown scant interest in making sweeping concessions. The Israelis want Gaza to be disarmed under any long-term deal - something Hamas rules out.
The United Nations said 425,000 of the 1.8 million population of Gaza have been displaced by the war, which has killed more than 1,900 Palestinians and, on the Israeli side, 64 soldiers and three civilians.
Most of the Palestinian dead have been non-combatants, Gaza hospital officials say.
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