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This undated picture released by North Korea's official Korean Central News Agency (KCNA) on September 3, 2017 shows North Korean leader Kim Jong Un, center, looking at a metal casing with two bulges at an undisclosed location.
This undated picture released by North Korea's official Korean Central News Agency (KCNA) on September 3, 2017 shows North Korean leader Kim Jong Un, center, looking at a metal casing with two bulges at an undisclosed location.

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    Why North Korean sanctions have failed

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Why North Korean sanctions have failed

For years, sanctions imposed by the United States and the UN have failed to stop North Korea's rapidly expanding nuclear program. Why have sanctions on North Korea failed so spectacularly? What sanctions could work?

Why North Korean sanctions have failed

For years, sanctions imposed by the United States and the UN have failed to stop North Korea's rapidly expanding nuclear program. Why have sanctions on North Korea failed so spectacularly? What sanctions could work?