Oh man. Trump: "As the British government advised the British people in the face of World War II, keep calm and carry on. That's what I did."

Churchill was famously blunt with the British people about how bad things could get.

Trump: "When Hitler was bombing London, Churchill, great leader, would oftentimes go to a roof in London and speak. And he always spoke with calmness. He said, 'We have to show calmness.'"

I am currently reading the Larson book and I can tell you this is very bad Trump History.

Churchill would sometimes go up on roofs and other high perches to watch the Blitz bombings. He did not broadcast from the roofs, clearly - he'd sneak up there in the dark. https://twitter.com/tc_green/status/1304217280180613120

Also: "The ‘Keep Calm’ design was never officially issued and only a very small number of originals have survived to the present day." https://history.blog.gov.uk/2014/06/27/keep-calm-and-carry-on-the-compromise-behind-the-slogan/