That's why I said old, Russia used to be a big bro because it was considered to be the only Major Slavic empire at that time and other Slavs was *occupied* by other ethnic empires. Tho Russia might deem as *heretic* but Slavic brotherhood sentiment triumph over it at one time.
Well i can only speak for Croatia, but my ancestors didn't really care for Russia. We always viewed ourselves as more central European than south eastern so we always gravitated towards Austria, Hungary, Italy and Rome. I can't recall if through the history of Croatia we ever wanted to get close to Russia
Slovenia even more so was closer to Austria than we were.
Romania even tho Orthodox has a rather unique language (Roman-Latin) and not Cyrillic
Serbia and Bulgaria are prolly 2 biggest pro Russia nations through history.
It was Russia who abused the Pan-Slavism and pretty much killed it anyways and Serbia played a huge role too
IMO what doomed Pan Slavism was the WW1 mentality post war. Cause Serbia was attacked it found itself on the winning side so us Croatians, Slovenians and others couldn't voice our opinion against them cause we were on loosing side.
There were talks between all Slav nations post ww1, hell Croatia-Slovenia and Bosnian had their own state without Serbia, but we were pressured to join Serbia because Italy was preparing to attack us.
If we had time we could have maybe get a better deal
Then WW2 came and Tito was the role reason why it worked. Once he died Nationalists, not communists, nationalists took power and the abuse started
no wonder they can't get along now or don't consider Them Big bro
Well we Croats oddly enough get along well with Serbia now. Yea sure there is some tension but it is mostly between Veterans and politicians for political points
But us younger generations don't give a fuck, war talk wont educate us, feed us, make us happy. Hence why most young population gets quite along quite well