Alexander Vindman, the former U.S. Army lieutenant colonel, provided testimony to the Congress in 2019 that framed the charge of abuse of power in the impeachment trial of former president Donald Trump.  In doing so, Vindman displayed a political courage that is far different from courage on the battlefield.  He is an American hero on various levels.  Nevertheless, his policy positions on Ukraine, if adopted, would pose a danger to U.S. national security policy, risking an unnecessary confrontation with Russia and a divided transatlantic alliance.