Belarus was admitted to the UN on 22 October 1945. The country is also a member of the ECE, IAEA, OSCE, IMF, UNCTAD, UNESCO, UNIDO, UPU, WHO, WIPO, and the World Bank. It is an applicant for membership in the WTO.
Belarus is applying for membership in other international organizations, and it is a member of the CIS. The country has signed the Nuclear Nonproliferation Treaty and has formal diplomatic ties with many nations. The United States recognized Belarus's sovereignty 25 December 1991. US diplomatic relations with Belarus were established two days later.