However , following an improvement in intra-Korean relations , the unit 's assassination mission was cancelled and in 1971 the unit revolted and most of its members were killed .
This group was intended to assassinate the leader of North Korea , Kim Il - sung .
Following an improvement in intra-Korean relations , the unit 's assassination mission was cancelled and in 1971 the unit revolted and most of its members were killed .
This group was intended to assassinate the leader of North Korea , Kim Il - sung .