The Prime Minister threw a training grenade and posed with a machine gun during a trip to see Ukrainian soldiers undergo training by the British Armed Forces.
Earlier this week, Boris Johnson joined in during exercises at the facility in Yorkshire, where some 400 soldiers from Ukraine are currently being trained.
The UK Government pledged to train thousands of soldiers as part of support offered to Ukraine following the Russian invasion, as well as £1bn in funding for state of the art equipment for the nation.
During the visit, Johnson took part in some exercises, later posing for pictures with soldiers and signing items for them.
In a video posted to Twitter, Johnson said: “I’ve been meeting some of the 400 Ukrainian troops who are here, being trained by our forces, getting ready to go and fight in Ukraine.
“It’s part of a huge commitment we’ve made to train Ukrainian forces. We want to train about 10,000 of them over the next four months.”
Johnson added that he hoped the investment the UK was making alongside other nations to supply Ukraine with weapons would “make a difference…to push back Putin’s evil attack on Ukraine.”
He continued: “I know that in the end, the Ukrainian people are going to succeed, I know that the Ukrainian forces are going to succeed.
“I’m very proud of the role that the UK has been able to play so far. But in the end, this is thanks to the bravery and the heroism of these Ukrainian troops.”
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