'Biden is p***ed': Furious Joe, 81, prepares for high-stakes first phone call with Netanyahu after strike killed seven aid workers with critics slamming president for being angry 'in private' while sending bombs to Israel

President Joe Biden and Israeli Prime Minister will hold a call Thursday morning after a drone strike killed seven aid workers in Gaza – including one dual American-Canadian citizen.

The call is expected to be 'tense,' officials claim after Biden called for accountability and swift investigation into the Israel Defense Forces strike on a route approved for aid delivery.

'Biden is p***ed,' a U.S. official told Axios. 'The temperature regarding Bibi is very high.'

World Central Kitchen (WCK) aid workers were delivering food to war torn Gaza on Monday when their three-car convoy marked as humanitarian assistance for the area was hit by an Israeli 'triple tap' drone strike.

Washington-area celebrity chef José Andrés established WCK and is a longtime Biden supporter. The president spoke with Andrés this week after the strike.

Israel apologized for what it called 'a grave mistake' and said it is investigating the incident – assuring it did not 'intentionally' strike aid workers. 

International outrage ensued after the death of the aid workers, including from Biden.

Biden will speak with Netanyahu on Thursday for the first time since the strike as tensions run high.

'I think you could sense the frustration in that statement yesterday,' White House national security spokesman John Kirby said Wednesday in reference to Biden's statement where the president claimed Israel hasn't done enough to protect civilians and aid workers stuck in the crosshairs of war in Gaza.

The conflict broke out on October 7 when Hamas terrorists invaded Israel and killed the most number of Jewish people in a single-day since the Holocaust. Israel launched a barrage of retaliatory strikes on Gaza, where Hamas is the de facto government.

Pro-Palestinian groups and activists have since expressed outrage and protested the Biden administration's backing of U.S. ally Israel and have called for a ceasefire. Supporters of Israel claim demands for a ceasefire equates to saying Israel doesn't have a right to defend itself against terrorists who want to wipe out Jewish people.

Biden is among the world leaders who want accountability for the deaths.

'I am outraged and heartbroken by the deaths of seven humanitarian workers from World Central Kitchen, including one American, in Gaza yesterday,' Biden wrote in a strongly-worded statement on the incident. 'They were providing food to hungry civilians in the middle of a war. They were brave and selfless. Their deaths are a tragedy.'

The president added: 'Israel has pledged to conduct a thorough investigation into why the aid workers' vehicles were hit by airstrikes. That investigation must be swift, it must bring accountability, and its findings must be made public.

The White House refused to say on Wednesday if Israel would face any consequences amid fury over the strike on World Central Kitchen workers.

Andrés, the group's founder, said in an interview that the IDF targeted aid workers 'systematically, car by car.'

He claimed Israel's military forces knew his aid workers' movements in advance of their ill-fated trip inside Gaza and the deaths were not a situation where 'they dropped the bomb in the wrong place.'

'This was over a 1.5, 1.8 kilometers, with a very defined humanitarian convoy that had signs in the top, in the roof, a very colorful logo that we are obviously very proud of,' he said. 'It's 'very clear who we are and what we do.'

'Even if we were not in coordination with the [IDF], no democratic country and no military can be targeting civilians and humanitarians,' he told Reuters after penning an op-ed where he declared 'food is not a weapon of war.'

Jacob Flickinger, 33, was a dual citizen of America and Canada who was killed in the strike. He was a veteran of the Canadian Armed Forces who served in Afghanistan.

Flickinger's father wrote in a Facebook message paying tribute to his son: 'My son, Jacob, was killed Monday delivering food aid to starving families in Gaza. He died doing what he loved and serving others through his work with the World Central Kitchen.'

A GoFundMe was set up to help Flickinger's partner Sandy, whom he shared a one-year-old son with, pay for any flights and funeral costs, as well as take off some of the burden considering Flickinger was the sole earner.

Also among those killed in the strike were three British armed forces veterans who were serving as security for the aid mission – John Chapman, 57, James (Jim) Henderson, 33, and James Kirby, 47.

Additional relief workers who died in the strike were 25-year-old Palestinian Saifeddin Issam Ayad Abutaha; Australian Lalzawmi (Zomi) Frankcom, 43; Damian Soból, a 35-year-old from Poland.

At least 196, including 175 members of the UN staff, aid workers have been killed in Gaza, according to United Nations Secretary General Antonio Guterres.

UN Secretary-General Antonio Guterres called the strike 'unconscionable' but 'an inevitable result of the way the war is being conducted'.