A new treaty regulates Soviet-Iranian commerce and navigation

Iran and Soviet Russia signed a postal convention in Moscow. Practical communications agreements broadened the relationship beyond revolutionary declarations and military crises.

Iran and the Soviet Union signed a trade treaty. Commercial diplomacy became part of the relationship as Iran pursued state consolidation and economic dealings with its northern neighbor.

Iran and the USSR signed a guarantee and neutrality treaty. Its protocols preserved the 1921 treaty’s intervention exception, qualifying the promise against introducing troops into the other state.

A separate Soviet-Iranian agreement established joint exploitation of southern Caspian fisheries under a 25-year concession. Economic cooperation raised questions of control over Iranian resources.

Iran and the USSR signed a convention recognizing reciprocal navigation rights and exclusive coastal fishing belts. It regulated use of the Caspian without dividing its seabed equally.

Iran and the USSR signed a new commerce and navigation treaty in Tehran. Caspian shipping provisions shaped relations before wartime occupation transformed the balance of power.

The Soviet government sent a note requesting removal of German agents from Iran. Further Soviet and British demands followed, challenging Iran’s neutrality before the invasion.

Britain and the Soviet Union invaded Iran despite its declared neutrality. Iran protested the intervention; Soviet authorities invoked security concerns and the 1921 treaty. The invasion placed...

Reza Shah abdicated during British-Soviet occupation and his son succeeded him. The change reopened political activity while Iran remained subject to foreign military power.

Former political prisoners and socialist politicians founded Tudeh in Tehran. A Soviet embassy representative attended; the party also developed an Iranian constituency.