26 December 1991
Dissolution of the USSR and German reunification
The independence of East-Central European countries, sealed with the dissolution of the Warsaw Pact in 1991 while the USSR was crisis-stricken, made it possible for Germany to reunify. Those events also led to the dissolution of the USSR in December of that year and the emergence of a number of post-Soviet countries on its territory. The legacy of the USSR in the form of international agreements, mainly concerning nuclear arms, was taken over by the Russian Federation, still stuck in a crisis.