By David Lawder WARSAW (Reuters) – U.S. Treasury Secretary Janet Yellen on Monday drew parallels between the financial pressure that the United States and its allies are imposing on Russia to the efforts of a 1940s Treasury secretary to deny financial resources to Nazi Germany. Yellen, speaking at the POLIN Museum of the History of Polish Jews in Warsaw, said that in 1940 then-Treasury secretary Henry Morgenthau persuaded then-President Franklin D. Roosevelt to sign executive orders to freeze assets of Denmark and Norway despite U.S. neutrality at the time. This denied the Nazis the ability to plunder the overseas wealth...