Serbia is having some independence problems.... looking at you FYROM....
Macedonia has independence, Vojvodina does not want independence. Serbia has no independence problems anymore, those times are over, now it is Kosova's Serbs that want autonomy or unification with Serbia.
even after destroying the Russian Empire, Russia supports Serbia and refuses to acknowledged poor Macedonia.
Serbia did not destroy the Russian Empire, they were even on the same side in the First World War. Macedonia is a 100% UN-fully recognized country. As for Kosova, well, as soon as America recognizes Abkhazia and South Ossetia.