(NBC NEWS) Top Chinese nuclear experts warned the U.S. that North Korea may already have 20 nuclear warheads and could double its arsenal by 2016, according to a report in the Wall Street Journal.
The worries were conveyed to American nuclear officials during a private meeting, the newspaper reported, citing people briefed on the matter.
The Chinese experts estimated that Pyongyang may already have 20 warheads, in addition to the capacity to make enough uranium bring that number to 40 next year, the Wall Street Journal reported. NBC News was not immediately able to confirm the report and U.S. officials were not immediately available for comment.