Top UN nuclear inspector said to tell diplomats that Tehran is thwarting his agency’s bid to inspect warehouse, flagged by Israel, where uranium particles were found

As 2015 atomic deal crumbles, officials say Islamic Republic harassed IAEA official at Natanz site

French president urges easing sanctions while pressuring Iranians to negotiate a return; Russia calls on Tehran to uphold commitments to 2015 deal, blames US for situation

Halting uranium enrichment at the heavily fortified Fordo was a major victory for the 2015 nuke deal; its reopening is seen as a dramatic bid by Tehran to leverage sanctions relief

IAEA inspectors on hand for move in latest pullback from nuclear deal; state TV says enrichment comes in reaction to increased US pressure, inactivity of Europe to save the deal

Iran seeks to 'envelop and destroy Israel,' PM warns after Rouhani announces latest violation of 2015 nuclear deal

Head of the country's atomic energy agency says Iran will stay below 20% threshold; announcement comes as Tehran says it will restart centrifuges at underground Fordo plant

Both Brussels and Moscow urge return to collapsing nuclear accord, though Putin's office says it understand's Tehran's position

Where the accord now stands, with Tehran taking another step away from the 2015 agreements to curb its nuclear development

President Rouhani says uranium gas to be injected into 1,044 centrifuges at underground nuclear site