Iran signs a security agreement with the United States

Iran deposited its accession instruments for the Baghdad Pact. Western security alignment increased tension with Moscow, which opposed Iran’s participation.

Mohammad Reza Shah and Queen Soraya arrived in Moscow for a state visit, showing that Western alignment still allowed direct diplomacy with the Soviet leadership.

Iran and the USSR signed a treaty on their frontier regime and procedures for investigating and settling border disputes and incidents.

Iran and the USSR agreed on equal shares of frontier river water and power resources and joint studies for irrigation and electricity projects on the Aras and Atrak.

Soviet–Iranian non-aggression talks ended without agreement amid disagreement over Iran’s Baghdad Pact membership and its planned defense agreement with the United States.

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.

The Shah began a state visit in Moscow that helped develop the next phase of Soviet–Iranian economic and technical cooperation.