Following World War II, Korea was split with the northern half coming under Soviet-sponsored communist control. After failing in the Korean War (1950-53) to conquer the US-backed Republic of Korea (ROK) in the southern portion by force, North Korea (DPRK), under its founder President KIM Il Sung, adopted a policy of ostensible diplomatic and economic "self-reliance" as a check against outside influence. KIM Il Sung's son, KIM Jong Il, was officially designated as his father's successor in 1980, assuming a growing political and managerial role until the elder KIM's death in 1994. KIM Jong Un was publicly unveiled as his father's successor in September 2010. Following KIM Jong Il's death in December 2011, the regime began to take actions to transfer power to KIM Jong Un and KIM assumed many his father's former titles and duties. After decades of economic mismanagement and resource misallocation, the DPRK since the mid-1990s has relied heavily on international aid to feed its population. The DPRK began to ease restrictions to allow semi-private markets, starting in 2002, but then sought to roll back the scale of economic reforms in 2005 and 2009.