Sergey Karpushkin, 46, of Miami, Fla., a resident of the United States and a citizen of Belarus, pleaded guilty this month to engaging in a scheme to violate U.S. sanctions and commit money laundering by conducting transactions for the purchase and acquisition of metal products valued at over $139 million from companies owned by Sergey Kurchenko, a sanctioned oligarch.

The former national chairman of the Proud Boys was sentenced last week for seditious conspiracy and other charges related to the breach of the U.S. Capitol on Jan. 6, 2021. His actions and the actions of others disrupted a joint session of the U.S. Congress that was in the process of ascertaining and counting the electoral votes related to the 2020 presidential election.