How did North Korea, a country with extremely restricted access to the internet, get so good at hacking? It's one of the best ways, says veteran Korea correspondent Jean Lee, to get cash while covering your tracks in order to keep the elite happy and the nuclear program going. "Sanctions and border closures won't matter if you're adept at cyber." Watch a clip from Lee's interview with Ian Bremmer on GZERO World.

Watch this episode of GZERO World with Ian Bremmer: The Korean Peninsula from K-Pop to Kim Jong-un

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