A former U.S. security official says North Korea's counterfeiting and narcotics trafficking earn Pyongyang hundreds of millions of dollars a year.
Michael Green, who served as senior Asian affairs director at the U.S. National Security Council, said Thursday that the matter is not open to negotiation.

Known for his influence on the Bush administration's policy toward Asia during his tenure, he said the North has purchased ink to print counterfeit currency of the United States, Japan, China and Europe and is illegally manufacturing Viagra