World Jul 02 AP report: Fire at Iran nuclear site hit centrifuge facility, analysts say By Jon Gambrell, Associated Press
World Nov 04 Iran breaks further from nuclear deal on anniversary of U.S. Embassy crisis Iran is doubling the number of advanced centrifuges it operates. By Nasser Karimi, Jon Gambrell, Associated Press
World Sep 05 Iran poised to work on faster centrifuges as nuclear deal collapses Centrifuges that speed enrichment further shorten the time Tehran would need to have enough material available to build a nuclear weapon — if it chose to do so. By Amir Vahdat, Jon Gambrell, Associated Press