Hundreds of Palestinians are feared dead after a huge blast at a hospital in Gaza City, blamed by the Hamas group on an Israeli air strike
Israel says the blast was caused by rockets misfired by another group, Palestinian Islamic Jihad, and both sides deny blame
US President Joe Biden will visit Israel on Wednesday but a planned summit in Jordan with Arab leaders has been cancelled
At least 600,000 Palestinians have fled the northern Gaza Strip for the south since Israeli military warnings
Israel has blocked essential supplies to Gaza in retaliation for a Hamas attack on 7 October that left 1,300 Israelis dead
The number of people killed has reached 500 following the alleged air strike on a hospital - according to the Gaza health ministry spokesman.
Meanwhile, an Israeli army spokesperson says the cause of the incident is not known and the army is looking into the details.
The BBC is working to verify details of the incident.
We are seeing unconfirmed reports from Hamas that Israeli warplanes have struck the Baptist Hospital in central Gaza.
A health spokesman is quoted estimating that hundreds of people were killed.
More on this story as we get it.
Image source, EPAA truck of a humanitarian aid convoy parked outside the border gate today
Egypt has said suggestions it is refusing to open the Rafah border crossing are "inaccurate and improper", and instead Israel's aerial bombardments have made the crossing "inaccessible".
The crossing between the Gaza Strip and Egypt is the only route for aid supplies to enter Gaza from outside Israel, and the only exit that doesn't lead to Israeli territory.
"As far as we’re concerned the Rafah crossing on our side is officially open," Shoukry told the BBC World Service's Newshour programme.
However, despite queues of lorries on Egypt's side and thousands of Palestinians on the Gaza side, nothing is flowing through the crossing, which remains in effect closed.
Shoukry also stresses the importance of "maintaining the safety and well-being of Gazans on their own territory". Egypt is known to be reluctant to take large numbers of Palestinian refugees - even before the war only 400 people were generally allowed through the crossing per day.
Image source, .At least six people have been killed when a school was hit during air strikes in the al-Maghazi refugee camp in the Gaza Strip, the United Nations says, external.
Dozens of others were injured, and it's thought the numbers will increase, according to the statement from the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA).
“This is outrageous, and it again shows a flagrant disregard for the lives of civilians," the statement adds. "No place is safe in Gaza anymore, not even UNRWA facilities."
UNRWA says the hit took place during Israeli bombardment of the Gaza Strip.
It adds: “At least 4,000 people have taken refuge in this UNRWA school turned shelter. They had and still have nowhere else to go."
Husam Zomlot, the Palestinian ambassador to the UK, says the situation in Gaza is "almost like living in an unimaginable horror movie".
Zomlot says people in Gaza have to make "horrific" choices over whether they should stay in their homes, how they ration water and food, and if they should continue vital medical care like cancer treatment or dialysis.
"It's really unimaginable what has happened," he tells BBC News.
Image source, .This infographic shows how the number of people forced to leave their homes in Gaza has increased since the conflict began on 7 October.
More than a million people have now been displaced – around half of the Gaza population.
Palestinians have been looking for bodies and wounded survivors at the sites of today's Israeli strikes in Khan Younis and Rafah.
At least 100 Palestinians have been killed in air strikes in southern Gaza, as the Israeli military continues to target the area, despite ordering civilians to move there for their own safety.
Deirdre Finnerty
BBC News
Image source, Ibrahim AlAaghaIbrahim is keen to return home to Dublin with his family
We've been hearing from Ibrahim AlAgha, 38, who was on holiday in Gaza with his wife and children with the siege began. The family, who are Irish citizens and normally live in Dublin, are now stranded in Ibrahim's parents' house in Khan Younis.
Ibrahim says his family took a “very risky journey” on Saturday to try to get out of Gaza via the Rafah crossing in the south.
But when they got there, he says they received a message from the Irish embassy telling them to turn back. Now Ibrahim fears he might not be able to get to the border if the Rafah crossing - which is currently closed - reopens.
“We’re running out of fuel, so we might reach a stage where we can't find any means of transportation to get us to the border.
“It might reach a stage where any sort of evacuation effort will be useless.”
Ibrahim says there is an “urgent need” for food, water and energy supplies in Gaza and is calling for any action that could be taken “to save lives”.
The intelligence chief of the Israel Defense Forces has said he was at fault for intelligence failures which led to Hamas carrying out its huge attack on Israel on 7 October.
In a letter to troops, Maj Gen Aharon Haliva wrote: "The Military Intelligence Directorate, under my command, failed to warn of the terror attack carried out by Hamas.
“We failed in our most important mission, and as the head of the Military Intelligence Directorate, I bear full responsibility for the failure.”
Haliva went on to say there would be a "deep and comprehensive" investigation, but the IDF's only task now was to "fight back and win".
The contents of the letter were published in Israeli media and confirmed by the Reuters news agency.
A spokesman for the Gaza ministry of health says in another update that because of power cuts and a scarcity of fuel, hospitals in the territory have "entered a stage of virtual collapse".
About 3,000 people have been killed in the Gaza Strip since 7 October, the Palestinian health ministry says in a fresh update, external.
The post adds that 12,500 people have been injured.
And 61 Palestinians have now also been killed in the separate West Bank, with over 1,250 injured.
The BBC's Rushdi Abualouf in the southern city of Khan Younis has been describing the critical situation as water supplies dwindle, with doctors rationing every patient to 300ml of drinking water every day.
In the street, people are queuing to beg for water and bread. "Ninety per cent of houses in southern Gaza...don't have water," he says.
Israel has blocked supplies of food, water, fuel, and electricity since the deadly Hamas attacks on 7 October - but the Israeli military denies there's a humanitarian crisis, insisting there are supplies of both water and electricity.
Image source, ReutersPresident Joe Biden is due to arrive in Israel tomorrow
We're hearing some of the first Israel-Gaza news lines of today's US news cycle, with both Defense Secretary Lloyd Austin and National Security Council spokesman John Kirby speaking ahead of Joe Biden's trip to Israel.
Austin said 2,000 military personnel had been put on a "prepare to deploy" order for the Middle East - if the situation escalates to a point that's deemed necessary. But the White House has stressed it does not intend to put US combat forces on the ground. The order simply allows the military "to respond more quickly" to the crisis, Austin told reporters earlier.
Meanwhile, in an interview with CNN, Kirby said preparing troops for deployment "is really about sending a signal of deterrence". He added: "There are no plans or intentions to put US boots on the ground in combat in Israel."
It's thought a trip to Israel tomorrow by President Joe Biden is largely aimed at preventing the war from spilling over into a wider, more regional Middle East conflict.
A total of 344 people are still in hospital in Israel following last week's attacks, the country's health ministry has said.
In an update this morning, external, the ministry said there were 82 people whose condition was severe, 194 who were moderate, and 68 who were mild.
It said 4,229 people had been admitted to hospitals altogether since the attacks.
A top Hamas commander has been killed in an Israeli air strike in Gaza, the group's armed wing says.
Ayman Nofal, a member of the higher military council of Izz el-Deen Al-Qassam Brigades, was in charge of the central Gaza area, Hamas writes on Telegram.
Deirdre Finnerty
BBC News
Image source, Ibrahim AlAaghaIbrahim’s family have tried to take in as many relatives and friends as they can. There are 90 people in his parents’ house because he says his family would never turn anyone away.
The group try to sleep in shifts, with two to a mattress. No-one can really relax.
“From the time we wake up to the time we sleep, we're just trying to survive.”
Food supplies are scarce and members of the group try to go out every day to see if canned food is being distributed. The group has water and wheat to bake bread but there still isn’t enough for more than one meal a day. It’s hard on the children - 10 of whom are under five.
“They always ask for food and water, and we're trying to get them as much as we can. It's very limited… it's very difficult.
"I mean, we elderly people, we can bear it a bit, we can stay hungry, but when children are asking for food we can’t say no to them.”
A pregnant woman and an elderly diabetic man are among their group, and Ibrahim says the man only has enough medicine for a couple of more days.
“If anything bad happens to anyone there is no way we will get to the hospital now… that’s something I’m always worried about.”
Image source, Ibrahim AlAaghaPeople staying in the house try to sleep in shifts
Deirdre Finnerty
BBC News
Image source, Ibrahim AlAaghaIbrahim AlAagha pictured outside the house where he is staying with 90 others in Khan Younis
Ibrahim AlAagha, 38, his wife Hamida and their three young children were visiting relatives in Gaza for an extended holiday when the Israeli siege of the territory began.
Now the family, who are Irish citizens and normally live in Dublin, are stranded in his parents’ house in Khan Younis.
The situation is especially difficult for the children, who are 8, 4 and 3 years old.
“They get really frightened when they hear a strike or an explosion… but all the time we try to play with them, we try to fill their time.”
At night, sounds of explosions and strikes can interrupt their sleep.
“There was one night where it was really bad… they woke up screaming.”
But Ibrahim says his oldest son, Sami, is most affected.
“He understands what’s going on… he can hear and feel the frustration we are going through and he is really worried.”
Image source, ReutersPalestinians search for casualties at the site of Israeli strikes on houses in Rafah
Still have questions about the conflict? We've answered some of the most commons ones here.
The number of French citizens killed during the Hamas attacks on Saturday 7 October has risen to 21, the French foreign ministry says in a statement.
“There are still 11 French citizens missing, some of them probably held hostages by Hamas” the statement adds - mentioning Mia Shem, a 21-year-old Israeli-French citizen who was kidnapped during the Supernova music festival.
Overnight, Hamas released a video of Ms Shem, which the French government condemned as "vile." There's more on this in our previous post.
French President Emmanuel Macron said "intense" negotiations to free the hostages in Gaza were progressing and added that taking hostages and blackmailing people was "heinous and unacceptable."
Watch: Israeli-French mother plea for hostage daughter's release
An Israeli-French mother says she saw her daughter appear on television as a Hamas hostage after not knowing whether she was "dead or alive".
She says her daughter looks "terrified" and in pain with a shoulder injury, adding she was saying "what they are telling her to say".
"I'm begging the world to bring my baby back home," she says.