Iran-North Korea-Syria Ballistic Missile and Nuclear Cooperation. Congressional Research Service, Library of Congress. Paul K. Kerr et al. February 26, 2016.
Congress has at times expressed concern regarding ballistic missile and nuclear programs in Iran, North Korea, and Syria. This report focuses primarily on unclassified and declassified U.S. Intelligence Community (IC) assessments over the past two decades. These assessments indicate that there is no evidence that Iran and North Korea have engaged in nuclear-related trade or cooperation with each other, although ballistic missile technology cooperation between the two is significant and meaningful, and Syria has received ballistic missiles and related technology from North Korea and Iran and also engaged in nuclear technology cooperation with North Korea.
[PDF format, 13 pages, 608.0 KB].