Between 2010 and November 2012, lawyers with the United States Department of Justice filed 8 cases against individuals and companies who were illegally trading with Iran. Prosecutors also report that more cases are being investigated but have remained sealed from the public due to its ongoing investigation.
The individual traders and companies have been based in Hong Kong and China and are illegally transporting materials in violation of international trade sanctions placed on Iran. According to the Department of Justice, materials sent to Iran include missile guidance systems, radio jammers, and materials that can be used in a nuclear weapons program.
Source: Ken Dilanian, “Illegal exports to Iran on the rise, say U.S. officials,” Los Angeles Times, November 17, 2012.