UN atomic watchdog hasn’t been able to access surveillance cameras at Iranian nuclear sites since late February

Washington insists that Ebrahim Raisi's ascension won't set back prospects of reviving faltering 2015 pact, but incoming Iranian leader has already rejected some key US demands

As diplomats at talks in Vienna on renewing 2015 pact take a break, Iranian Deputy FM Araghchi says closing gaps to finalize an agreement will be difficult

PM says Islamic Republic 'must never be allowed to have weapons of mass destruction' as negotiators meet in Vienna; Iran’s nuclear envoy says sides are closer to deal than ever

In further breach of nuclear deal and amid talks on striking new agreement, Tehran spokesperson says country has also stockpiled 108 kilograms of uranium enriched to 20% purity

As diplomats say talks over 2015 deal need more time, countries warn Tehran against 'further escalation'; condemn its ballistic missile program, support for proxy terror groups

Leaders of the G-7 group of nations reaffirm a commitment to stop the Islamic republic from building nuclear weapons

US secretary of state admits he's unsure Tehran interested in rejoining pact; IAEA chief adds to skepticism, saying 'space narrowing' for a temporary deal

UN nuclear agency head Grossi has been pushing Tehran for answers on three sites dating back many years where inspections revealed traces of uranium of man-made origin

Lacking data, IAEA forced to issue estimate of uranium stockpiles; says there was likely a slowdown in enrichment after mysterious blast in April at Natanz facility