Political deputy at the Ministry of Foreign Affairs of Iran, Abbas Araghchi leaves the 'Grand Hotel Vienna' where closed-door nuclear talks take place in Vienna, Austria, Saturday, June 12, 2021. (AP Photo/Florian Schroetter)
Iranian Deputy Foreign Minister Abbas Araghchi leaves closed-door nuclear talks in Vienna, Austria, on June 12. AP

G7 leaders pledge to halt Iran's nuclear plans amid caution on 2015 deal talks