“Godwin’s Law” is an internet cliché that states that the longer an online argument goes, the more likely that one side will compare the other to Hitler. And now, Putin seems to have done just that. He’s attempted to justify his invasion of Ukraine by asserting that he wants to "de-Nazify" the country. Such a claim seems ludicrous, so why would he try to make it? The answer can be found in his KGB background. Paul Kengor explains why.