EEC–Soviet Union cooperation agreement
The Agreement between the European Economic Community and the European Atomic Energy Community and the Union of Soviet Socialist Republics on trade and commercial and economic cooperation (Russian: Соглашение между СССР и Европейским экономическим сообществом и Европейским сообществом по атомной энергии о торговле, коммерческом и экономическом сотрудничестве) is an international agreement of European Economic Community (EEC), the Euratom and the Soviet Union (USSR) signed in Brussels on 18 December 1989 and came into force on 1 April 1990. As of 2025, the Agreement is in force between the European Union and the Republic of Belarus and between the European Union and Turkmenistan.
Source: Wikipedia — EEC–Soviet Union cooperation agreement (CC BY-SA 4.0)