South Korean Finance Minister Choo Kyung-ho met his U.S. and Chinese counterparts on the sidelines of the G20 economic leaders' meeting held in India, the ministry said. Choo said during a meeting on Monday with U.S. Treasury Secretary Janet Yellen that recently improving ties between South Korea and Japan would also contribute to closer economic relations among the three countries. South Korea will continue to cooperate with the United States on sanctions against Russia, Choo was quoted as saying in a statement released by the ministry.