Iran holds talks with Russia over buying an upgraded version of the S-300 surface-to-air missile defense system.
Iran confirms that Russia will stop using its Hamadan Airbase to launch attacks in Syria, saying Russia's use of Hamadan Airbase was "temporary, based on a Russian request," and that Russian operations are "finished for now". Iranian Defence Minister Hossein Dehghan earlier criticized Russia's announcement of its use of the base in Iran, saying "There has been a kind of showing-off and inconsiderate attitude behind the announcement of this news."
Iran nuclear chief Ali Akbar Salehi says nine tons of Iran's enriched uranium will be exported to Russia in the next few days, as the country moves to implement the nuclear deal and secure relief from international sanctions.
Russian president Vladimir Putin lifts the ban on delivery of S-300 missile air defense systems to Iran in connection to the nuclear dialogue. Israel and the United States oppose the deal on the grounds that Iran is a state sponsor of terrorism.
Iran, the United States, the United Kingdom, France, Russia, People's Republic of China, Germany, and the European Union (the P5+1) reach a breakthrough agreement on the general framework for an agreement on Iran's nuclear program, but sign no verbal agreement or official document. The deadline for a full deal is June 30, 2015.
Iranian President Mahmoud Ahmadinejad and Russian President Dmitry Medvedev disagree over Russia's support for United Nations sanctions concerning Iran's nuclear program, with some analysts describing it as the worst row between the countries for several years.