Duhhh...Actually he was their insurance policy...If Kim didn't do as he was told, they would just replace him with his brother.
North Korean Leader's Assassinated Half-Brother Was A CIA Informant: WSJ
"...the CIA has repeatedly thought that it had well-placed sources in North Korea, human sources, that really knew what was going on... Those sources have more often than not proved to not know what’s going on..."
North Korean Leader's Assassinated Half-Brother Was A CIA Informant: WSJ
"...the CIA has repeatedly thought that it had well-placed sources in North Korea, human sources, that really knew what was going on... Those sources have more often than not proved to not know what’s going on..."