John Flickinger, father of killed aid worker Jacob, revealed he had told US Secretary of State Antony Blinken that the 'time for talk' with Israel was over, in an exclusive interview filmed from Quebec on Wednesday.

"The time for the United States to act to rein Israel in is long past," he said he had told Blinken after the diplomat spoke with him following the deadly Israeli airstrike on the World Central Kitchen convoy in Gaza last week.

"We keep threatening that there will be consequences. But obviously, [Israeli Prime Minister Benjamin] Netanyahu is not listening and is not taking those threats seriously…the time for talk is over. And the time to use the leverage that we have as a country, the United States has long passed," he continued.

Jacob, a 33-year-old dual US-Canadian national and former soldier was one of seven aid workers - also including three Brits, an Australian, a Pole and a Palestinian - who were killed on April 1. His father spoke about Jacob's family life as a new dad himself to 18-month-old Jasper, and how he had become involved in the aid work.

"When an opportunity came up to serve with their work in Gaza, he jumped at it," John explained. "WCK said they really needed boots on the ground to help get the aid from the ships to the warehouses to the distribution centres… We spoke of the risk before he left. He said he was very clear-eyed. There was some risk, but he said, Dad, people are starving to death, and I think I can help."

John added that he had strong reservations, having 'opposed him going to Afghanistan' because 'I didn't believe in the war'.

"I didn't want to lose my son in another war. So, I opposed that… that was always a point of tension for us. He resented that I didn't support him going at that time," John admitted. "So, this time around, I tried to be as supportive as possible. I talked to him, you know, man to man about the risk."

"It's chaotic," he continued, speaking about the situation in Gaza. "I didn't know that so many aid workers had been killed by the IDF since the start of the conflict because mostly they were, you know, Palestinian aid workers working with World Central Kitchen and other aid agencies. But that news doesn't get out. It doesn't get out to the West, okay? Now that six Westerners were killed, now it's an international headline. I don't agree with that."

However, John said that Jacob believed the IDF were there 'protecting him' and that they last spoke on Easter Sunday, just days before his son was due to leave the region - before discussing his final mission.

"They had just delivered food aid from a ship that was recognised around the world that was coming in. It was an international news story. They (the IDF) were aware the ship was in," he said.

"Maybe the first missile was a mistake, the IDF followed the convoy. I'm sure you've heard the reports. All evidence shows that geolocation evidence shows they followed the convoy for two kilometres. They continued firing until every truck was hit and every worker was dead," he alleged. "So that's a deliberate attack. Now, was it a mistake? That's another question, and that, in my mind, is unanswered."

Media outlets also published imagery appearing to show separate strikes over two kilometres apart. A review last week by Israel stated that the attack on the aid convoy was a 'grave mistake stemming from a serious failure due to a mistaken identification'. Prime Minister Benjamin Netanyahu also said his forces had 'unintentionally struck innocent people in the Gaza Strip'.

WCK demanded an independent investigation and has suspended operations in Gaza.

John expanded on his conversation with the Secretary of State, saying that while Blinken was 'very very sympathetic', he had 'pushed back' and told the diplomat that 'you cannot allow the perpetrator to investigate themselves'.

"Obviously, Netanyahu is not listening to President Biden. And that the only way to get him to listen is to take specific action. Suspend military aid now to Israel until there's a plan in place and they change their conduct in this war and humanitarian workers are guaranteed a degree of protection," he said.

"Same thing goes with Canada. I understand that there's a, that they are buying arms. The same missiles, if I read the report correctly… the same missiles that killed my son, Canada is buying from Israel. So that purchase should be suspended," he said.

Canada has stated that it had 'no plans' to review the purchase of Israeli-made missiles that media reports claimed were the 'likely munition' used in the attack - although there was no confirmation from Israel.

John concluded with what he believed would be Jacob's lasting legacy.

"If we can somehow bring an end to this conflict, or if it somehow changes the course of this conflict, then he would be very proud of that," he said, adding that there was a 'shadow' over the end of Ramadan for both himself and Muslims 'all over the world'.

"If we can lift that cloud somewhat and bring some peace, he would be very proud of that," he added.

A charity campaign has been set up in memory of Jacob to support his young family and can be found at https://gofund.me/407cca1a.

Fighting continues in Gaza in the seventh month of the conflict. Hamas launched an unprecedented attack on southern Israel on October 7, killing 1,139 people, mostly civilians, and kidnapping over 200, according to Israeli officials.

Israel declared war on the group and a 'complete siege' of Gaza, with a large-scale campaign of air strikes. A ground incursion began at the end of the third week, with Israeli leaders vowing to 'wipe out' Hamas. Palestinian officials reported that at least 33,000 people had been killed, and 75,000 were injured, at the time of publication.

The Israeli Defence Forces (IDF) claimed that Hamas locations and infrastructure were targeted in the response. However, United Nations experts warned against 'collective punishment' for the people of Gaza, before predicting a 'humanitarian crisis' and then claimed that 'hell is settling in' for the region.