Nuclear negotiator also says 1,000 more centrifuges will be installed at Natanz nuclear facility, the site of a recent attack blamed on Israel

Iranian FM says Tehran can now legitimately use any capacity it has at Natanz after 'terrorist stupidity'; Russia's Lavrov says Moscow expects nuke deal to be saved

NY Times cites officials who say device was smuggled into plant; Tehran lawmakers call for suspension of nuclear talks; US officials don't know if Iranians will show up in Vienna

Unsourced report says enrichment facility entirely stopped functioning since explosion, estimates blast set back Iran's nuclear program by months

Leaked atomic watchdog report says Iran has installed 174 highly advanced IR-4 machines at underground site in further violation of nuclear deal, and plans on installing more

Citing Iran's 'dangerous behavior,' letter to Blinken says any nuclear agreement must also include Tehran's ballistic missile program and funding of terror

UN nuclear watchdog tells member states Islamic Republic has started using a third cluster of advanced IR-2m centrifuges at underground Natanz plant

Blast said caused by gas cylinders, according to Iranian media; incident latest in series of mysterious occurrences in Iran

Blast at centrifuge assembly facility may have set back development by 2 years, experts tell the NY Times, with series of strikes causing 'extreme internal and external pressure'

Director at US-based Washington Institute writes that explosion at Natanz facility targeted advanced centrifuges, which Tehran needs to produce enough fissile material for a bomb