Hossein Dehghan warns limited, tactical conflict could escalate into 'comprehensive crisis' that world cannot stand; warns Israel's expanding presence could be 'strategic mistake'

Elliott Abrams says sanctions targeting Tehran for human rights violations and its ballistic missile program will go on, Israel-UAE deal creates new headaches for regime

Visiting Israel, Elliott Abrams says he's optimistic about new administration's ability to negotiate a better deal, if it leverages economic hardship caused by crippling sanctions

New images show road has been built; analysts believe new facility to be built inside mountains, months after reported sabotage

IAEA says centrifuge structure meant to replace Natanz plant hit by mysterious explosion over summer; Tehran had promised to replace site with more secure one in mountains

IAEA says it took environmental samples from location following agreement last month that ended standoff over suspected activity

No casualties reported in incident, which follows a number of mysterious blasts and blazes throughout Iran

Washington's old allies have been reluctant to follow Trump in his crusade to reinstate sanctions after exiting 2015 nuclear deal

Officials offers no evidence for assertion that Tehran will have enough material for bomb by year's end; over 2 dozen individuals and entities linked to arms trade to be penalized

Rafael Grossi, head of International Atomic Energy Agency, says Tehran's granting inspectors access to two disputed sites could build cooperation