In one of the strongest criticisms of North Korea yet by a U.S. official, Washington's top envoy to Seoul on Wednesday labeled the communist nation a criminal regime. Alexander Vershbow even likened North Korea's counterfeiting of U.S. bills with that of actions by the late German dictator Adolf Hitler. North Korea gave no immediate response to the verbal attack. "According to an observer, North Korea is the first regime that has done that since Adolf Hitler," the U.S. ambassador said in a breakfast meeting with senior journalists in Seoul. During World War II, Nazi Germany mass-produced counterfeit British pounds...