On 21 December of the same year, Moldova, along with most of the other Soviet republics, signed the constitutive act that formed the post-Soviet Commonwealth of Independent States (CIS). Moldova received official recognition on 25 December. On 26 December 1991, the Soviet Union ceased to exist. Declaring itself a neutral state, Moldova did not join the military branch of the CIS. Three months later, on 2 March 1992, the country gained formal recognition as an independent state at the United Nations. In 1994, Moldova became a member of NATO's Partnership for Peace program, and a member of the Council of Europe on 29 June 1995.