 Friedman argued that U.S. Justice Department lawyers who authored memos justifying torture of American detainees had acted contrary to basic, American values and in violation of principles espoused by the United States at the Nuremberg Trials which followed World War II.In 2011 Friedman criticized an Israeli anti-boycott law as a violation of free speech.He also returned to research concerning the European Theater of Operations in World War II and to a long-standing interest in Spinoza's Theological-Political Treatise.