Hence, on 23 August 1990, the Volkskammer of the GDR declared the accession of East Germany to the Federal Republic under Article 23 of the Basic Law; and so initiated the process of reunification, to come into effect on 3 October 1990. Nevertheless, the act of reunification itself (with its many specific terms and conditions; including the fundamental amendments to the Basic Law) was achieved constitutionally by the subsequent Unification Treaty of 31 August 1990; that is through a binding agreement between the former GDR and the Federal Republic now recognising each another as separate sovereign states in international law.[1] This treaty was then voted into effect on 20 September 1990 by both the Volkskammer and the Bundestag by the constitutionally required two-thirds majorities; effecting on the one hand, the extinction of the GDR, and on the other, the agreed amendments to the Basic Law of the Federal Republic.