context: 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 .
hypothesis: Korean War is a geographical/political entity
corpus-sent-id: p04/d0691 4