 After the North Korean nuclear test on 25 May 2009, North Korea's relations with China and Russia changed.Russia, fearing that North Korea's success could lead to a nuclear war, joined China, France, Japan, South Korea, United Kingdom and the United States in starting a resolution that could include new sanctions.The Russian news agencies were outraged when North Korea threatened to attack neighboring South Korea after it joined a U.S. led plan to check vessels suspected of carrying equipment for weapons of mass destruction.