Shah begins a new Soviet state visit

Iran signed a cooperation agreement with the United States at Ankara, reinforcing its Western security ties after the failure of Soviet–Iranian talks.

Iran assured the USSR that it would not permit foreign missile bases on Iranian territory or allow Iran to be used for aggression against the Soviet Union.

Iran and the USSR concluded an economic and technical cooperation agreement underpinning the Aras hydro-engineering complex and Mil-Mugan diversion dam.

Iran and the USSR signed a payments agreement, adding a financial instrument to their growing economic relationship.

An agreement signed in Tehran established a framework for commercial air services between Iran and the USSR.

Iran and the USSR signed agreements linking Soviet assistance for industrial construction with Iranian natural-gas supplies, including the Isfahan steel project.

Iran and the USSR concluded a cultural-relations agreement, extending formal cooperation beyond trade and industrial construction.

Soviet premier Alexei Kosygin arrived in Tehran and was welcomed by Prime Minister Amir-Abbas Hoveyda, illustrating the expansion of high-level contacts.

Iran and the USSR signed a protocol defining their frontier through new Aras reservoirs, with equal-area territorial exchanges and equal rights to reservoir water.

Iran and the USSR signed a long-term commodity-turnover agreement, reinforcing the commercial side of their rapprochement.