Iran's Nuclear Program: Tehran's Compliance with International Obligations [April 28, 2014] [open pdf - 316KB]
"In 2002, the International Atomic Energy Agency (IAEA) began investigating allegations that Iran had conducted clandestine nuclear activities. Ultimately, the agency reported that some of these activities had violated Tehran's IAEA safeguards agreement. [...] The IAEA Board of Governors referred the matter to the U.N. Security Council in February 2006. Since then, the council has adopted six resolutions, the most recent of which (Resolution 1929) was adopted in June 2010. The Security Council has required Iran to cooperate fully with the IAEA's investigation of its nuclear activities, suspend its uranium enrichment program, suspend its construction of a heavywater reactor and related projects, and ratify the Additional Protocol to its IAEA safeguards agreement. However, Tehran has continued to defy the council's demands by continuing work on its uranium enrichment program and heavy-water reactor program. Iran has signed, but not ratified, its Additional Protocol. Tehran has limited and reversed some aspects of these programs' progress since the government began implementing a November 2013 Joint Plan of Action between Iran and China, France, Germany, Russia, the United Kingdom, and the United States. Iran and the IAEA agreed in August 2007 on a work plan to clarify the outstanding questions regarding Tehran's nuclear program. Most of these questions have essentially been resolved, but the agency still has questions regarding 'possible military dimensions' to Iran's nuclear programme."
CRS Report for Congress, R40094