President Trump turned the history of the Western world upside down last week.

As we all learned in high school, the worst example of a weak, naive and dangerous foreign policy occurred in September 1938. That’s when British Prime Minister Neville Chamberlain flew to Munich to meet with German Chancellor Adolf Hitler. After which, ignoring Hitler’s build-up of the German army and plans to seize territory from neighboring nations, Chamberlain flew back to England and bragged that he had secured “peace for our time.”

Six months later, Hitler invaded Czechoslovakia and World War II was soon underway. Ever since, historians have talked about the “Lessons of Munich” — that no matter how nicely you treat him and no matter how many promises he makes, you can’t trust a dictator. Only a fool would try. Appeasement doesn’t work.

It seems that everyone learned that lesson — except Donald Trump. From now on, historians won’t be talking about Neville Chamberlain anymore. Instead, history books will focus on the worst example of appeasement in our lifetime: Friday, Feb. 28, when President Trump lured Ukrainian President Volodymyr Zelensky into the Oval Office — and used the occasion to put the United States squarely in the camp of Russian President Vladimir Putin.

Of course, this wasn’t the beginning of Trump’s love affair with Putin, it’s just the latest, crowning........

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