Wikipedia
Pan-Slavism
Pan-Slavism, a movement which crystallised in the mid-19th century, is the political ideology concerned with the advancement of integrity and unity for the Slavic peoples. Its main impact occurred in the Balkans, where non-Slavic empires – the Byzantine Empire, Austria-Hungary, the Ottoman Empire, and Venice – had ruled the South Slavs for centuries.
Usage examples of "pan-slavism".
Whether this great destructive Idea was expressed in the religious form of the assertion of the sole truth of Eastern Orthodox Christianity, or of the later political form of Slavophilism and Pan-Slavism, or of the present-day Marxist-Bolshevism, it continues to have the same inner imperative of destroying everything Western, which it feels is stifling its Russian soul.