The Union of Independent States after the North Korean surrender to UIS President Vladimir Zhirinovsky after North Korean leader Kim Jong-Il was assassinated on Zhirinovsky's orders for failure to sign the North Korea-UIS friendship treaty. The UIS forces proved to be superior to the Korean People's Army. The remnants of the KPA and North Korean government went to exile to South Korea, the diehard North Koreans who survived were deported to Sakhalin Island.
Obviously based on a timeline in Alternate History Dot Com about Vladimir Zhirinovsky becoming the Russian President. It's an alternate of an alternate; Zhirinovsky in the original timeline was overthrown in 2006. Here, he is careful not to allow UIS troops in Afghanistan again save for the Spetsnaz.