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This undated picture released by North Korea's official Korean Central News Agency on March 12, 2013 shows North Korean leader Kim Jong Un (R) inspecting a long-range artillery sub-unit of Korean People's Army Unit 641 at undisclosed place in North Korea.
This undated picture released by North Korea's official Korean Central News Agency on March 12, 2013 shows North Korean leader Kim Jong Un (R) inspecting a long-range artillery sub-unit of Korean People's Army Unit 641 at undisclosed place in North Korea.

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    Analyst: Don't hyperventilate over NK

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Analyst: Don't hyperventilate over NK

CNN's Becky Anderson talks to Robert Carlin, former U.S. senior adviser on North Korea about the country's latest threat.

Analyst: Don't hyperventilate over NK

CNN's Becky Anderson talks to Robert Carlin, former U.S. senior adviser on North Korea about the country's latest threat.