EU High Representative Mogherini (L), Iranian Foreign Minister Zarif, Head of the Iranian Atomic Energy Organization Salehi, Russian Foreign Minister Lavrov, British Foreign Secretary Hammond and US Secretary of State Kerry . (Joe Klamar/AP)
EU High Representative Mogherini (L), Iranian Foreign Minister Zarif, Head of the Iranian Atomic Energy Organization Salehi, Russian Foreign Minister Lavrov, British Foreign Secretary Hammond and US Secretary of State Kerry . (Joe Klamar/AP)