Palestinian protesters took to the streets in the occupied West Bank on Wednesday, blaming Israel for a strike on a hospital in war-torn Gaza that killed hundreds.

Israel has denied blame and said the hospital was hit by an Islamic Jihad rocket that misfired.

Hundreds of protesters in Nablus, many draped in Palestinian flags and some holding Hamas banners, chanted slogans against Israel and its ally the United States.

"Free, free Palestine," chanted the protesters.

Egypt's president said Wednesday he would not allow any mass influx of refugees from Gaza, saying it would set a precedent for "the displacement of Palestinians from the West Bank into Jordan".

After talks with visiting German Chancellor Olaf Scholz, President Abdel Fattah al-Sisi blamed Israel's air strikes on the Rafah crossing between Gaza and Egypt for the failure to get aid to the territory's 2.4 million people.

"The displacement of Palestinians from Gaza to Egypt means the same displacement will take place for Palestinians from the West Bank into Jordan," Sisi warned.

Gazans combed through the debris of the devastated hospital, collecting the bodies of the dead in the battered enclave Wednesday, hours after a strike killed hundreds sheltering at the facility.

Alongside rows of charred vehicles, volunteers recovered corpses and limbs that were placed in body bags, while the remains of others were covered in white shrouds and blankets.

"This is a massacre," Ahmed Tafesh, who assisted in the recovery effort, told AFP, saying he had collected the eyes, arms, legs and heads of the deceased.

A Gaza hospital strike that killed at least 200 people has unleashed a torrent of condemnation across the Arab world, with even allies blaming Israel for the attack, despite its denials.

The denunciations coincided with angry rallies in Lebanon, Jordan, Libya, Yemen, Tunisia, Turkey, Morocco, Iran and the Israeli-occupied West Bank, with more planned on Wednesday following calls for a "day of rage" across the region.

US President Joe Biden on a solidarity visit to Israel Wednesday backed the ally's account that Palestinian militants caused a devastating hospital strike in Gaza, adding Hamas had brought "only suffering."

"I was deeply saddened and outraged by the explosion at the hospital in Gaza yesterday. And based on what I've seen, it appears as though it was done by the other team, not you," Biden said as he opened a meeting with Prime Minister Benjamin Netanyahu in Tel Aviv.

"But there's a lot of people out there not sure so we have to overcome a lot of things," Biden said.

Truckloads of aid bound for the war-torn Gaza Strip remained on the Egyptian side of the border Wednesday, as Egypt blamed Israel for not allowing it to reach desperate civilians.

Foreign Minister Sameh Shoukry rejected as "inaccurate" claims that Egypt had kept the only border crossing with Gaza not controlled by Israel closed.

"As far as we're concerned, the Rafah crossing on our side is officially open," Shoukry told the BBC on Tuesday.

US President Joe Biden landed in Israel Wednesday on a solidarity visit following Hamas attacks, under the shadow of a deadly blast at a Gaza hospital that has inflamed regional tensions.

Israeli Prime Minister Benjamin Netanyahu personally welcomed Biden on the tarmac, putting his arms around the US president who then clasped his hands around Netanyahu in a sign of the newfound bond between the two leaders.

EU chief Ursula von der Leyen said Wednesday there is "no excuse for hitting a hospital full of civilians" in Gaza, but did not apportion blame for the blast.

The European Commission president told EU lawmakers the "facts need to be established" on the overnight strike on the Gaza hospital which killed at least 200.

Israel and Palestinians accuse each other of the blast, which triggered street protests in the Middle East against Israel.

Von der Leyen said "all those responsible must be held accountable".

Qatar has agreed to supply British firm Shell with natural gas for 27 years, the Gulf emirate's state-owned energy company announced on Wednesday.

Since Moscow's invasion of Ukraine last year, European countries have scrambled to replace lost deliveries of natural gas from Russia.

Qatar will supply 3.5 million tonnes of gas a year under the deal, QatarEnergy said, following two agreements with Shell for a share of the Gulf state's huge North Field gas expansion project.

Scores of foreigners were killed, wounded or taken hostage after Hamas attacked Israel on October 7.

The worst attack in Israel's 75-year history killed more than 1,400 people, mostly civilians, inside the country, according to Israeli officials.

Israel has responded with bombardment that has killed over 5,000 people in the Gaza Strip, mostly civilians, according to the Hamas-controlled health ministry in the territory.