British Foreign Secretary Philip Hammond (L), U.S. Secretary of State John Kerry (2nd L ) and China's Deputy Foreign Minister Li Baodong (3rd L), Cheng Jingye (4th L), Ambassador and Permanent Representative of China to the United Nations and other International Organizations in Vienna, Russia's Deputy Foreign Minister Sergei Ryabkov (5th R), French Foreign Minister Laurent Fabius (4th R), European Union foreign policy chief Federica Mogherini (3rd R) and Germany's Foreign Minister Frank-Walter
Nuclear talks between Iran and the world's six major powers have entered their most difficult phase, but all involved parties are working on new proposals submitted by Tehran, Russia's Deputy Foreign Minister Sergei Ryabkov said on July 9.