The Baltic Federation is a parliamentary federation formed by the republics of Estonia, Finland, Latvia and Lithuania. Each of the four republics forming the federation maintains a high degree of autonomy, passing to the federal level economic policies, international relations, defense and security as well as promoting laws harmonizing rights and obligations among all citizens of the federation. The federation was established in March 1992 between the Republics of Estonia and Finland. Later in 1993 and 1994 the republics of Latvia and Lithuania joined the federation.