Tehran has started to increase uranium enrichment beyond the purity threshold it agreed to as part of a landmark nuclear deal, the Iranian government announced Sunday. Cnn.com

The North Korean regime has suggested it is rethinking whether it should abide by its moratorium on nuclear and missile tests and other steps aimed at improving ties with the U.S.  cbsnews.com

Federal prosecutors in New York have charged three Iranians with illegally exporting “many tons” of carbon fiber, a controlled material with military and nuclear uses, to Iran. Nbcnews.com

A waste drum at a nuclear fuel factory near Columbia caught fire and exploded last week, according to a federal safety report.  Postandcourier.com