The full quote is: "This is a man of blood and iron, a barbarian and savage who can scarcely spell his own name, who writes a diary in a sort of scrawl, a man who has committed unspeakable crimes."
Churchill said this in a speech to the House of Commons on May 13, 1940, as Britain was preparing for war against Nazi Germany.
It's important to note that while the quote is widely attributed to Churchill, there is no definitive evidence that he actually said these exact words.
However, the sentiment expressed is consistent with his views on Hitler and the Nazi regime.