https://www.bloomberg.com/view/articles/2017-06-21/trump-russia-and-those-shadowy-sater-deals-at-bayrock
"One of Bayrock's principals was a career criminal named Felix Sater who had ties to Russian and American organized crime groups. Before linking up with the company and with Trump, he had worked as a mob informant for the U.S. government, fled to Moscow to avoid criminal charges while boasting of his KGB and Kremlin contacts there, and had gone to prison for slashing apart another man’s face with a broken cocktail glass."
