Judge ordered researcher Roland Marchal and academic Fariba Adelkhah released but prosecution opposed, sending matter to Revolutionary Court, which deals with espionage crimes

Aide to FM Zarif says figure 'not final,' stresses no direct talks were held between Tehran, Washington for exchange over the weekend

Satellite images show apparent underground storage passage on an alleged IRGC base in eastern Syria, near the Iraqi border

Former vice president implicitly criticizes Trump-ordered pullout from northern Syria

Leader of Iranian-backed group claims it has a 'bank of targets' prepared in revenge for alleged Israeli involvement in his country's conflict

US swaps Iranian scientist Massoud Soleimani for Chinese-American Princeton graduate student Xiyue Wang in Swiss-brokered arrangement

Assistant head of country's Atomic Energy Organization says '50 new achievements' will be revealed next year

Kelly Craft in first United Nations press conference warns Iran that Washington has 'other tools' if Tehran continues its bad behavior

Charge comes as Pentagon said mulling sending up to 7,000 troops to region; Washington calls Iranian demonstrations 'worst political crisis' ever faced by regime

Masih Alinejad, a women's rights advocate who fled Islamic Republic after 2009 unrest, recently obtained American citizenship