Military veterans John Chapman, 57, James Henderson, 33 and James Kirby, 47, died while working with charity World Central Kitchen in Deir al-Balah, central Gaza.
And now the Prime Minister is under growing pressure to act after what some military experts described as a "deliberate" strike.
Senior Tory and Labour politicians, as well as a former national security adviser, urged Mr Sunak to "reassess our supply of weaponry" - amid fears British weapons may have been used in Monday's atrocity.
One branded the response to the killings from Israeli PM Benjamin Netanyahu "shamefully inadequate".
Mr Sunak stopped short of revoking arms licences to Israel.
He said: "We've always had a very careful export licensing regime that we adhere to. There are a set of rules regulations and procedures that we'll always follow.
"And I've been consistently clear with Prime Minister Netanyahu since the start of this conflict that - whilst of course we defend Israel's right to defend itself and it's people against attacks from Hamas - they have to do that in accordance with humanitarian law, protect civilian lives, get more aid into Gaza.
"What we want to see is an immediate humanitarian to allow more pause aid in and crucially for more hostages to also be released."
He added: "What's happened is a tragedy and it shouldn't have happened. And there are questions need answering.
This story is from the April 04, 2024 edition of Daily Express.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber ? Sign In
This story is from the April 04, 2024 edition of Daily Express.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Sign In
Slo torture as Brits waste a golden chance to end hoodoo
BOULTER RUNS OUT OF GAS AND TEAM LOSE THEIR WAY
BY EDDIE DID ME A FAVOUR HAVING A GO
Ollie changed after Jones attacked his 'bad attitude'
HILL DOESN'T TOP BILL
NICKY HENDERSON insisted there is \"nothing wrong' with Constitution Hill after his stable superstar was deposed as Champion Hurdle favourite yesterday.
THE ALTERNATIVE UNDERTAKER
From clifftop ceremonies to campervan-driven vigils and funeral pyres, Rupert Callender s revolutionising the 'bad theatre' that characterises the business of death in modern Britain
Cock-a-doodle-don't!
Residents have sleep shattered by bird's noisy 3am squawking
Mission to revive boxer pupfish after zoo finds it has the only one left
A ZOO is spearheading a conservation effort to save a rare fish species from extinction - after discovering it had the last remaining boxer pupfish.
'I'll never forget the horror in my dying husband's eyes'
A WIDOW who watched her husband choke to death due to cancer says she will never forget the look of horror in his eyes.
Gisele blasts the 'cowards' accused.of her many rapes
A FRENCHWOMAN who was sexually violated by scores of men after her husband drugged her called them all \"cowards\" yesterday as she gave evidence for the last time.
5,000 calories per day and no nature documentaries
Rev Richard Coles on lax pre-jungle routine
A criminal abuse of 'Stasi' police powers Pictures: GETTY
THE SINGLE most appalling aspect of the Allison Pearson story is that she was not told of what exactly she was accused.
