« The prime minister said he had visited Ukraine and knew the people of the country, adding: "My judgment is that they will fight."
Mr Johnson, speaking to reporters in Milton Keynes, said: "We also need to get a message that invading Ukraine, from a Russian perspective, is going to be a painful, violent and bloody business.
"I think it's very important that people in Russia understand that this could be a new Chechnya."
Asked if an invasion was imminent, he said: "I've got to tell you that I think the intelligence is pretty gloomy at this point. There is certainly a very, very large array of Russian forces and we have to take the necessary steps.
"I don't think it's by any means inevitable now, I think that sense can still prevail."
He is due to speak to international allies on Monday. »