Boris Johnson claims Vladimir Putin threatened to kill him before Russia’s invasion of Ukraine.

Former UK Prime minister, Boris Johnson has said Russian president, Vladimir Putin threatened him with a missile strike in an “extraordinary” phone call in the run-up to Russia’s invasion of Ukraine.

The then-prime minister said Putin told him it “would only take a minute”.

Johnson said the comment was made after he warned Putin the war would be an “utter catastrophe” during a “very long” call in February 2022.

Details of the conversation are revealed in a new BBC documentary, “Putin vs the West” examining Mr Putin’s interactions with world leaders before invasion of Ukraine.

Johnson warned Putin that invading Ukraine would lead to Western sanctions and more Nato troops on Russia’s borders.

He also tried to deter Russian military action by telling Putin that Ukraine would not join Nato “for the foreseeable future”.

“He threatened me at one point, and he said, ‘Boris, I don’t want to hurt you but, with a missile, it would only take a minute’ or something like that. Jolly.

“But I think from the very relaxed tone that he was taking, the sort of air of detachment that he seemed to have, he was just playing along with my attempts to get him to negotiate.”

President Putin had been “very familiar” during the “most extraordinary call”, Johnson said.

No one knows if Putin’s threat was genuine.

However, given previous Russian attacks on the UK – most recently in Salisbury in 2018 any threat from the Russian leader, however lightly delivered, is probably one Johnson would have had taken seriously.

Boris Johnson received a call from President Putin the day after he met Volodymyr Zelensky in Kyiv.Nine days later, on 11 February, Defence Secretary Ben Wallace flew to Moscow to meet his Russian counterpart, Sergei Shoigu.

In the documentary Wallace left with assurances that Russia would not invade Ukraine, but he said both sides knew it was a lie.

He described it as a “demonstration of bullying or strength, which is: I’m going to lie to you, you know I’m lying and I know you know I’m lying and I’m still going to lie to you.

“I think it was about saying ‘I’m powerful’,” Mr Wallace said.

He said the “fairly chilling, but direct lie” had confirmed his belief that Russia would invade.

As he left the meeting, he said Gen Valery Gerasimov – Russia’s chief of general staff – told him “never again will we be humiliated”.

Less than a fortnight later, as tanks rolled over the border on 24 February, Johnson said he received a phone call in the middle of the night from President Zelensky.

“Zelensky’s very, very calm,” Mr Johnson recalled. “But, he tells me, you know, they’re attacking everywhere.”

Johnson says he offered to help move the president to safety.

“He doesn’t take me up on that offer. He heroically stayed where he was.”