Slavic Brotherhood vs Foreign interventionism

Oj Slave! That is the anthem of the former Jugoslavija during Tito's Iron grip. How did the Slavic brotherhood formed a lot of times and being broken apart by selfish world powers?

Well, from my own point of view, the pan-Slavism i encountered im history books are defining my nationalist attitude as well.

First, i saw the Slavs occupy almost all of Central, Eastern and Southeastern Europe. There, they were divided through time, religion, politics and other factors. Out of these divisions, the Eastern(Russians, Belarussians, Ukrainians), Western(Poles, Czechs, Slovaks) and my favorite subjects, the Southern(Bulgarians, Serbs, Croats, Bosniaks, Slovenes, Macedonians, Montenegrins and the minority mixed Yugoslavs) Slavs.

Two, they developed independent kingdoms/empires much to the chargin of some empires in Western Europe. What happened on the way? Roman Pope wants it all in the Slavic lands so they were able to convert the Western Slavs and some in the Southern brothers but never conquered the Orthodox East until the Brest union. The Southern Slavs endured Ottoman and Austrian occupation until 1918.

Third thing though, the post WWI periods were somehow disastrous politically. Most of the Eastern Slavs fell in Communist hands, Western Slavs fell in selfish dictators with the exception of Czechoslovakia until Hitler invaded it and the South Slavs in chaos because of the IMRO, Ustaše and extremists all over, plauging the young Kraljevstvo Jugoslavija.

WWII and the after years before the 90's were mixed however. USSR tried to be a world power, the Western Slavs under the USSR sphere of influence while the Southern ones, Bulgaria is the only one controlled by USSR while Jugoslavija have that economic miracle by having a mixed market and socialist economy and one of the founding fathers of the non-aligned movement.

The contemporary period, the Western Slavs may be free from USSR but they allied themselves with the wrong EU and American friends, USSR broke up and making Russia weak for the first time since 1943 and Jugoslavija broke up thanks to American and EU geopolitical ambitions to further divide the Slavic brotherhood. What Amerika and EU did? Fund the pro-Western politicians in the former Jugoslavija, enslave the Western Slavs with EU economic policies and made sure Ukraine would fall in Western backed fascists. All i can say is that, Russia could be alone this time but once every Slavic state would break free from the menace EU and Američko geopolitical interests, the Slavic brotherhood could threaten the balance of power but also, be the shining light to destroy imperialism once and for all.