Iran was also sending weapons and ammunition to Syrian government forces despite a ban, said Thomas Countryman, Assistant Secretary for International Security and Nonproliferation.
"Both Iran and North Korea have developed channels that enable them to continue to export and continue to procure the items they need for their weapons industry," he told a news briefing in Geneva.
In comments to Reuters, he made clear he was referring to high-tech materials related to nuclear and other programs, including conventional weapons.
