The U.S. Treasury Department has added Russian tycoons Mikhail Fridman and Pyotr Aven -- founders of Alfa-Bank -- to the sanctions list. The department said on August 11 that two other Russian oligarchs, German Khan and Aleksei Kuzmichyov, who are major shareholders of Alfa-Group holding, as well as the Russian Union of Industrialists and Entrepreneurs were also added to the list. The four billionaires have been under European, Australian, Canadian, Swiss, and New Zealand sanctions imposed on them for being close to President Vladimir Putin and for financing Kremlin’s ongoing aggression against Ukraine. To read the original story by RFE/RL's Russian Service, click here.