North Korea ‘rapidly’ advances nuclear arms beyond ‘few dozen’ warheads, says U.N. atomic head

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• currentsapi(Mixed)By Andrew Salmon

  SEOUL, South Korea — North Korea continues to upgrade its nuclear facilities, the head of the U.N.’s atomic agency said Wednesday in Seoul. His visit came in the midst of a Middle East conflict in which Iran — which has not acquired nuclear capabilities — has suffered punishing I…