SEOUL, March 10 (UPI) -- A nuclear arms expert has cast a shadow of doubt over a U.S. researcher's claim that Pyongyang could produce 100 nuclear bombs in the next five years.
In an interview with Voice of America, Olli Heinonen, a former deputy director-general at the International Atomic Energy Agency, said more information about the capability of the nuclear weapons being tested is needed and until then conclusions about the bombs cannot be made.