party school in east pyongyang where analyst say officials who run afoul of kim undergo brutal psychological conditioning and enter rags. north koreans call it reintegration. it s not a country club. it s almost certainly a very gruelling process where there is both physical and mental abuse. reporter: experts say cho may not have been executed because he s a so-called prince-like, the son of a revolutionary hero who fought with kim song-il. he reportedly had a defense minister killed with an anti-aircraft gun. south koreans officials say he s executed 70 top officials since taking power four years ago. we re seeing a very protracted power consolidation process in which the leadership