In Gaza, where the "health system is collapsing," doctors "cannot offer much" to their hundreds of severely wounded patients, Dr. Mohammed Ghandil from Gaza's Nasser Hospital told ABC News.

"The hospital door is open, but the health care is not provided," Ghandil said.

"We are just giving some peaceful words for them to die," he said.

The World Health Organization said Tuesday that one-third of hospitals in Gaza and two-thirds of clinics were not functioning.

More than 17,000 people in Gaza have been wounded since Oct. 7.

"Even the medical patient [who] was not wounded, who came with heart attack, with stroke, with sepsis, we're just sending them home because there is no bed in the hospital," he said. "The hospital corridors, the hospital backyards, the hospital balcony are fully, fully packed with the severely wounded."

Gaza is set to run out of fuel Wednesday night, according to the United Nations Relief and Works Agency for Palestine Refugees in the Near East.

"If the fuel is zero," Ghandil said, "the doctors and the nurses will go home and the hospital will turn to a big morgue."

18:06

ABC News Live: Hospitals in Gaza on the brink of collapse

The U.N. Relief and Works Agency says Gaza will run out of fuel as soon as Wednesday, forcing hospitals to stop operations.

-ABC News' Somayeh Malekian

"Some progress" has been made as Qatar continues its hostage negotiations with Hamas, Qatari Foreign Minister Mohammed bin Abdulrahman Al-Thani said at a news conference.

"If we compare where we started and where we are right now, there is some progress and some breakthrough and we will remain hopeful," he said. "The negotiations are still ongoing and at any moment of time, I think that if we will be able to get along between the two parties, I think we will see some breakthroughs hopefully soon."

Israel reported that 222 hostages were taken by Hamas. Four hostages have been released in the last week: two American women and two Israeli women.

The United Nations General Assembly will be called back into an emergency special session in New York on Thursday morning to debate the Israel-Hamas war.

The general assembly could vote on moves, including a humanitarian pause in Gaza and the establishment of an international protective presence in Gaza.

3:35

A history of conflict: An ongoing war between Israel and Palestine

The Hamas terrorist attack on Israel this weekend comes amid the backdrop of a longstanding history of conflict over land and independence that has plagued the region. 

The Israel Defense Forces said Wednesday morning that it has carried out "wide-scale strikes" in the neighboring Gaza Strip over the past 24 hours.

The Israeli airstrikes hit Hamas infrastructure, including tunnels, military headquarters and weapons warehouses, as well as "several terrorists," including a Hamas commander, according to the IDF.

The IDF said it also killed five Hezbollah militants in neighboring Lebanon who tried to launch missiles and rockets against Israeli forces in the last day.

Two rockets were fired into Israel from neighboring Syria and the IDF said it responded by attacking infrastructure and positions of the Syrian military.

-ABC News' Morgan Winsor