A man watches a TV news program showing a file image of missile launch conducted by North Korea, at the Seoul Railway Station in Seoul, South Korea, on Oct. 20. The U.S. military said it detected a failed North Korean missile launch that day. The U.S. Strategic Command issued a statement late Wednesday saying it presumed the missile was a Musudan intermediate-range ballistic missile. Lee Jin-man/AP hide caption

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Lee Jin-man/AP

Even With Failures, North Korea's Nuclear Program Races Ahead

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