Korea: Purging The Dynasty
http://www.strategypage.com/qnd/korea/articles/20170220.aspx
February 20, 2017: Kim Jong Nam, the older brother of Kim Jong Un was recently (February 14th) murdered in Malaysia, apparently by North Korean assassins. North Korea has regularly used commandos and secret agents to kill “enemies of North Korea” who were outside the country.
. . . .
the book made it clear (implicitly, not explicitly) that China had sheltered the eldest (born 1971) son of Kim Jong Il for decades and some Chinese considered him a potential replacement for Kim Jong Un if the younger son does not succeed as the new ruler of North Korea.
There had been recent rumors of the Chinese preparing to implement such plans and that may have led to the assassination.
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(Much was skipped. Entire article is at the link. Zim.)
(Maybe China was thinking of replacing the half witted
Kim Jong Un with his more 'China Friendly' brother?)