Iran has been a non-nuclear-weapon signatory to the NPT since 1970. It has a uranium enrichment program that it says is for peaceful purposes, not developing weapons, but Western powers and Israel suspect it intends to develop the means to make atomic bombs.

The U.N. nuclear watchdog's 35-nation Board of Governors declared Iran in breach of its non-proliferation obligations on Thursday for the first time in almost 20 years, raising the prospect of reporting it to the U.

The International Atomic Energy Agency declared Iran was in breach of its Nuclear Non-Proliferation Treaty obligations by failing cooperate with an probe into undeclared nuclear material and activities at multiple sites.