The United States government has taken action against two Russians and two cryptocurrency exchanges tied to alleged illicit Russian finance. The departments of the Treasury, Justice and State were involved, along with an assortment of overseas law enforcement agencies. The Treasury Department’s Financial Crimes Enforcement Network (FinCEN) identified PM2BTC, a Russian cryptocurrency exchange, and Sergey Ivanov, who is associated with that exchange, as being of “primary money laundering concern.” At the same time, Treasury’s Office of Foreign Assets Control (OFAC) has sanctioned Ivanov and anot…