This is great! I never understood the Serbian view of allying with a loser country like Russia. I assume it was all corruption and oligarchs.
Nato bombed Serbia in 1999. Russia is anti nato. Result unsurprising.
Hopefully, wounds are healing, and more productive friends can be found.
They share many cultural elements.
There are many political factions in Serbia. Some (mainly older people) still harbor negative feelings towards EU and NATO countries for bombing them in 1999 and recognizing Kosovo as an independent state. So an alliance with Russia seems like a better option to them even though it's an economic dead end.