dismemberment
political process of dividing a single entity into several, often accompanied by violence and coercion
dissolution of the Russian Empire
the collapse of the tsarist Russia at the end of the First World War and the Russian Revolutions
dissolution of the Soviet Union
process leading to the late-1991 breakup of the USSR
breakup of Yugoslavia
process starting in the late 1980s leading to the dissolution of the Socialist Federal Republic of Yugoslavia
dissolution of the Russia
hypothetical disintegration of Russia