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This undated picture released from North Korea's official Korean Central News Agency (KCNA) on March 9, 2016 shows North Korean leader Kim Jong-Un (C) meeting with the scientists and technicians in the field of researches into nuclear weapons and guiding the work for boosting the  nuclear arsenal at an undisclosed location. / AFP / KCNA / KCNAKCNA/AFP/Getty Image
This undated picture released from North Korea's official Korean Central News Agency (KCNA) on March 9, 2016 shows North Korean leader Kim Jong-Un (C) meeting with the scientists and technicians in the field of researches into nuclear weapons and guiding the work for boosting the  nuclear arsenal at an undisclosed location. / AFP / KCNA / KCNAKCNA/AFP/Getty Image

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Former U.S. official: Obama policy on N.Korea will fail

Joel Wit from Johns Hopkins University speaks to Christiane Amanpour as North Korea moves ahead with its nuclear missile program.

Former U.S. official: Obama policy on N.Korea will fail

Joel Wit from Johns Hopkins University speaks to Christiane Amanpour as North Korea moves ahead with its nuclear missile program.