Admitted to the UN on 27 October 1961, Mongolia participates in ESCAP, FAO, IAEA, ILO, IMF, ITU, UNESCO, UNIDO, UPU, WHO, WIPO, WMO, and the World Bank. It is a signatory to the Law of the Sea treaty, and a member of the WTO. Mongolia is an observer at ASEAN, and participates in the Asian Development Bank and the G-77.
The principal ally of Mongolia was the former USSR, which provided substantial economic and military assistance over the years. In 1986, the MPR made efforts toward normalizing relations with China, which had become strained after the expulsion of Chinese laborers in 1983, by establishing the first five-year trade agreement between the two countries, restoring air service and improving rail service between them, and exchanging consular delegations for the first time.
In the 1990s, Mongolia expanded its political and financial relationships with the United States, Japan, and the European Union. However, it remains dependent upon Russia and China for the development of its economy and trade.