IAEA verifies violation at underground Fordo facility; Iranian FM claims government was legally bound to take step, says move 'fully reversible upon FULL compliance by ALL'

Rouhani gives green light to move, which would bring Islamic Republic just a short step away from attaining weapons-grade levels of 90%

Tehran nuclear chief issues warning amid heightened tensions day ahead of one-year anniversary of Soleimani's killing in US drone strike

At such level, uranium is a relatively short jump from weapons-grade material; signatories to nuclear deal have urged Tehran not to squander chance to salvage the 2015 accord

Purpose of new construction at Fordo, which has been suspected as a site with military purposes, remains unclear

Tehran announced resumption of enrichment at Fordo site last November in a further step away from 2015 nuclear accord abandoned by Washington in May 2018

Move is not in protest of nuke deal violations, but rather due to uranium's technological incompatibility with production of isotopes for medical purposes

Secretary of State Mike Pompeo says Tehran has no reason to restart enrichment at once-secret Fordo facility, but critics note allowances had given rare window into site

Kingdom berates Tehran after IAEA says uranium traces found at undeclared site, confirms enrichment at Fordo

Report appears to confirm Netanyahu's revelations about 'secret atomic warehouse'; UN agency verifies enrichment at Fordo facility, says Tehran violating stockpile limits