Key points
- Israel launches wave of airstrikes across Gaza, ending ceasefire after talks stalled
- At least 400 killed in attacks, Hamas-run health ministry says
- Hostage families brand Netanyahu claim 'complete deception'
- Analysis:Israel attacked to pressure Hamas on ceasefire
Inside Gaza
- 'I did six operations overnight - most of them will die'
- 'I woke up at 2am in Gaza City to smoke, bombs and the sound of ambulances'
- Satellite imagery reveal thousands have returned to 'dangerous combat zone'
- Watch: Explosions across Gaza's skyline
Live reporting by Mark Wyatt
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Submit your questions for live Q&A
Middle East correspondent Alistair Bunkallwill be answering your questions live at 2pm this afternoon.
He'll tackle questions on the latest attacks on Gaza, how Israel's strikes have affected the chance of peace and the wider impacts for the region.
Submit your questions in the form above, and we'll put as many as we can to Bunkall this afternoon.
Explained: The stages of the ceasefire
Israel has torn up its ceasefire deal with Hamas after accusing the militant group of a "repeated refusal" to release hostages.
All hostages were due to be released as part of the ceasefire deal announced on 15 January, but this morning's strikes have brought the process to an abrupt end.
Here's how the deal played out and how it was supposed to continue into a second phase...
Phase one
Over the course of six weeks, Hamas released 25 living Israeli hostages and eight dead hostages.
In return, Israel released about 1,900 Palestinian prisoners and detainees.
Israeli forces also left populated areas of Gaza and hundreds of aid lorries were allowed back into the enclave daily.
The deal required 600 truckloads of humanitarian aid to be allowed into Gaza every day of the ceasefire, 50 of them carrying fuel, with 300 of the trucks allocated to the north.
Phase two
Negotiations on the second phase were meant to begin 16 days after the start of phase one - but this did not happen.
Also meant to be completed over six weeks, phase two was supposed to see a permanent ceasefire established and the complete withdrawal of Israeli forces from Gaza.
Crucially, it was also due to see the remaining living hostages in Gaza handed over in exchange for more Palestinian prisoners.
Phase three
A third phase was also planned and was expected to include the return of the bodies of the dead hostages and the beginning of Gaza's reconstruction.
Gaza health ministry appeals for blood donations
The Hamas-run health ministry in Gaza has launched an urgent appeal for blood donations.
It comes as the ministry reported 404 people had been killed by Israeli strikes and a further 562 were injured (see 10.13am post).
In an update, the ministry said there is currently an "urgent need for blood units" after the blood bank's stock was exhausted.
"Whoever saves a life, it is as if he has saved mankind entirely," the post adds.
Israeli far-right party says it's returning to Netanyahu government
Israeli far-right politician Itamar Ben-Gvir's party says it is returning to Benjamin Netanyahu's government.
The Otzma Yehudit party had left the ruling coalition after Netanyahu agreed to a ceasefire in Gaza in January.
Ben-Gvir's return strengthens Netanyahu's government,which was left with only a thinparliamentary majority following his departure.
He had earlier posted his support for Israel's return to fighting in Gaza.
"This is the right, moral, ethical and most justified step in order to destroy the Hamas terrorist organisation and bring back our hostages," he said.
"Hamas's existence cannot be tolerated—it must be dismantled."
IDF 'continuing to strike terror targets' across Gaza
The Israeli military says it is continuing to strike "terror targets" belonging to the Hamas and Palestinian Islamic Jihad militant groups in Gaza.
It says the targets struck over the past few hours include "terrorist cells, launch posts, weapons stockpiles, and additional military infrastructure" used to plan and execute attacks against Israeli civilians and IDF soldiers.
"At this time, the IDF and ISA are striking terror targets throughout the Gaza Strip," it adds.
Hamas says Israel has violated the ceasefire agreement with its strikes, accusing it of trying to "mislead public opinion and create false justifications to cover up its prior decision to resume genocide against defenseless civilians".
"Hamas adhered to the agreement until the last moment and was keen to maintain it," the group said in a statement.
"However, Netanyahu, seeking a way out of his internal crises, preferred to reignite the war at the expense of our people's blood."
In pictures: Israeli tanks positioned near Gaza border
Here are some images we've received of Israeli tanks positioned near the Israel-Gaza border.
It comes Benjamin Netanyahu says Israel will "from now on act against Hamas with increasing military strength" after accusing the group of "repeated refusal to release our hostages".
Our Middle East correspondent Alistair Bunkall said earlier that Israel's attack had hit "all parts" of Gaza using airstrikes, tank artillery and naval ships positioned off the coast (see 06.44am post).
How many hostages are still in Gaza?
Israel believes 59 hostages are still being held by Hamas in Gaza, with 24 thought to be alive.
Of those, 22 are Israelis, one is Thai and one is Nepalese.
All of them are young men who were kidnapped during the October 7 attacks in 2023.
The group is believed to include four active-duty soldiers and several people who had been working security at the Nova music festival, some of whom Hamas has claimed were soldiers as well.
The Hostages and Missing Families Forum says the Israeli government "chose to give up" the hostages when it decided to strike Gaza this morning.
In a statement, it expressed shock and anger at what it calls the "deliberate dismantling of the process to return our loved ones".
The group has issued an "emergency call", calling on people to head to Jerusalem to protest.
Netanyahu holds meeting with defence staff
Benjamin Netanyahu has held a meeting with his defence minister and the heads of his security team this morning.
The prime minister can be seen below sitting with Israel Katz, as well as IDF chief of staff Eyal Zamir and military secretary Roman Gofman.
Satellite imagery shows thousands of Gazans have returned to 'dangerous combat zone'
By Adam Parker, OSINT editor
Satellite imagery shows thousands of Gazans have returned to an area that the Israeli military now calls a "dangerous combat zone".
Since the ceasefire began in January, a large number of Gazans have returned to their homes in the north of the enclave.
A satellite image taken on 2 March by Planet Labs shows huge areasof Beit Hanoun that have been filled withtents over the past three months.
A vast proportion of the area was destroyed by Israel during its war with Hamas, with tents now seen scattered among buildings and in open areas.
Beit Hanoun is among the neighbourhoods the IDF has issued an evacuation notice for this morning, telling residents those who remain there are putting their own lives at risk (see 7.14am post).
Plenty of people have heeded that warning already, with many pictured fleeing their homes in anticipation of further Israeli military action (see 9.20am post).
Analysis: Netanyahu fears wrath of Trump - after that Zelenskyy showdown
Israel will be desperate to keep the US and Donald Trump on side as it ramps up its attacks in Gaza, reportsMiddle East correspondent Alistair Bunkallfrom Jerusalem.
"Ultimately, it all leads back to Washington," says Bunkall, adding that Trump has "much more influence" over Benjamin Netanyahu than Joe Biden did.
The Trump administration was consulted by Israel before launching the attacks on Gaza.
"[Israel] won't admit this publicly, but they saw what happened to President Zelenskyy in the White House," he adds, referring to the Ukrainian president's disastrous appearance in the Oval Office last month.
"They know that one or two wrong moves by Netanyahu could mean that he faces the wrath of President Trump.
"So they want to keep the Americans on side. They need to keep the Americans on side. And for the moment, they do have the Americans on the side."
404 killed in strikes, health ministry says
The number killed by the Israeli strikes on Gaza has risen to 404, according to the Hamas-run health ministry in the enclave.
A further 562 are injured, its statement says, adding: "A number of victims are still under the rubble, and efforts are underway to recover them,"
The death toll has increased by nearly 100 people since an update from the ministry earlier said at least 326 had been killed, with women and children among the dead (see 8.20 am post).
Prior to that, it said that efforts to recover victims had been hampered due to the "complete paralysis" of the transport sector in Gaza, caused by a lack of fuel (see 6.22am post).