Hamas is unlikely to reject a Gaza ceasefire proposal it received from mediators this week, but will not sign it without assurances that Israel has committed to ending the war, a Palestinian official close to the talks said on Thursday.

Qatari and Egyptian mediators presented Hamas this week with the first concrete proposal for an extended halt to fighting in Gaza, agreed with Israel and the United States at talks in Paris last week. Hamas has said it is studying the text and preparing a response.

The Palestinian official said the Paris text envisions a first phase lasting 40 days, during which fighting would cease while Hamas freed remaining civilians from among more than 100 hostages it is still holding. Further phases would see the release of Israeli soldiers and the handover of bodies of dead hostages.

"I expect that Hamas will not reject the paper, but it might not give a decisive agreement either," said the Palestinian official speaking on condition of anonymity.

"Instead, I expect them to send a positive response, and reaffirm their demands: for the agreement to be signed, it must ensure Israel will commit to ending the war in Gaza and pull out from the enclave completely."

The head of the Hamas political unit in exile, Sami Abu Zuhri, told Reuters in a message that the group had nothing to add since it announced two days ago that it was studying the truce offer.

Such a long pause would be a first since Oct. 7, when Hamas fighters attacked Israel, killing 1,200 people and capturing 253 hostages, precipitating an Israeli offensive that has laid waste to much of Gaza. Health officials in the enclave said on Thursday the confirmed death toll had risen above 27,000, with thousands more dead still lying under the rubble.

The only pause in the fighting so far, at the end of November, lasted only a week. International aid agencies have pleaded for an extended respite to alleviate a humanitarian catastrophe in the enclave, where nearly the entire 2.3 million-strong population has been made homeless.

The big gap between the two sides appears to be over what would follow any agreed truce. Israeli Prime Minister Benjamin Netanyahu has vowed not to pull troops out until "total victory", which he defines as eradicating Hamas.

Hamas says it will not sign up to any temporary truce unless Israel commits to a withdrawal and permanent end to the war.

In a sign of the seriousness of the proposal, Hamas leader Ismail Haniyeh has said he will travel to Cairo to discuss it, although no firm date has been given for his trip.

'ALL WE WANT IS A CEASEFIRE'

The diplomatic progress has been accompanied by some of the most intense fighting of the war. Israel launched a huge ground assault last week to capture the main southern city Khan Younis, sheltering hundreds of thousands of displaced civilians. Combat has also surged in northern areas which Israel claimed to have subdued weeks ago.

Residents said Israeli forces pounded areas around hospitals in Khan Younis overnight, and stepped up attacks close to Rafah, the small city on the enclave's southern edge where more than half of Gaza's population is now sheltering, mainly in makeshift tents and public buildings.

Osama Ahmed, 49, a father of five from Gaza City now sheltering in western Khan Younis, said there had been fierce resistance in the city, and relentless bombardment from air, ground and sea as tanks advance.

"They haven’t entered deep into Al-Mawasi where we live but everyday they get closer," he told Reuters by phone, referring to the western district of Khan Younis along the Mediterranean Coast.

"All we want is a ceasefire now and to return to our homes, end the war and humiliation."

More than 30,000 people huddled in schools near Khan Younis's main Nasser hospital lack water, food, baby formula and medicines, said Ashraf Al-Qidra, spokesman for Gaza's Ministry of Health.

The fate of aid operations has been complicated by Israel's accusation that some employees of UNRWA, the main U.N. agency for Palestinian refugees, were involved in the Oct. 7 attacks.

Major donor countries have suspended funding. UNRWA said on Thursday it would be forced to shut down operations, in Gaza, the West Bank, Syria, Lebanon and Jordan by the end of February unless the suspension is lifted.

The Israeli military said on Thursday troops fighting at close quarters and directing airstrikes had killed "dozens of terrorists" in the past day in Khan Younis. It also reported fighting in central and northern Gaza.

Palestinian health officials said medical teams had recovered 14 bodies of Palestinians who were killed near the centre of Khan Younis after some tanks retreated from there. It was unclear when those people were killed.

In the north, where some residents had returned after Israeli forces partially withdrew in January, army planes dropped leaflets on Gaza City repeating an order for residents in several large districts to flee south.

Outside of Gaza, the war has been accompanied by escalation in a number of flashpoints across the Middle East involving armed groups allied to Israel's foe Iran.

The Iran-aligned Houthi movement that controls most populated parts of Yemen has attacked shipping in the Red Sea, drawing retaliatory strikes from the United States and Britain. Washington said it launched fresh strikes overnight, taking out 10 drones in Western Yemen before they could take off.

(Reporting by Nidal al-Mughrabi in Doha, Tala Ramadan and Jana Choukeir in Dubai, Ari Rabinovitch in Jerusalem; Writing by Sharon Singleton Editing by Peter Graff)