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North Korea defectors, Yeonmi Park and Joseph Kim, speak about the brutality they endured. CNN's Elise Labott reports.
Pamela Brown reports on Sony's cyber hack and how it is worse than first thought.
North Korea is suspected in a massive cyber attack that crippled Sony Pictures and posted several of its movies online.
North Korea threatens they will conduct nuclear tests in response to the U.N. probing into human rights violations.
A United Nations General Assembly committee voted to hold North Korean leaders accountable for human rights violations.
Director of National Intelligence James Clapper talks about his recent secret mission to North Korea. Tom Foreman reports.
Brian Todd reports on new images of Kim Jong Un walking without a cane. He's also undertaken a fresh round of purges.
New satellite images show North Korea is developing a submarine capable of launching long-range ballistic missiles.