The dollar's role as the undisputed reserve currency of the world allows the United States to impose unilateral sanctions against actions performed between other countries, for example the American fine against BNP Paribas for violations of U.S. sanctions that were not laws of France or the other countries involved in the transactions. In 2014, China and Russia signed a 150 billion yuan central bank liquidity swap line agreement to get around European and American sanctions on their behaviors.
