礼萨汗
The pipeline was agreed between Iran and the Soviet Union in 1965. It was inaugurated in October 1970 in Astara by Mohammad Rezā Shāh Pahlavi and Nikolai Podgorny, Chairman of the Presidium of the Supreme Soviet. In 1971–1979, Southern Caucasus republics of the Soviet Union were supplied through this pipeline by natural gas from Iran. After Iranian Revolution Iranian supplies were cut off.