Russia's Governor to the International Atomic Energy Agency (IAEA), Mikhail Ulyanov, has a cigarette break in front of the 'Grand Hotel Wien' where closed-door nuclear talks with Iran were taking place in Vienna, Austria, Wednesday, May 19, 2021. World powers have held a fourth round of high-level talks aimed at bringing the United States back into a landmark nuclear deal with Iran. Both sides suggested a resolution was possible but major stumbling blocks remain.  (AP Photo/Lisa Leutner)