Looking at a map of Europe, I would be nervous if I was a Romanian, or maybe even a Moldovan. A clear wide passage of land between Russia to the Mediterranean, unhindered by the needing to exit the Black Sea via a possibly hostile Turkey/Ottoman Empire, through Ukraine, Moldova, Hungary, Romania, Albania, Croatia, and Serbia for direct passage of Russian defence, trade, and shipping is something that may be part of the long-term plan. Even China, having a land link to the Mediterranean via co-operation with Russia may be part of their strategy too.
A lot of elderly Yugoslavs are sighing and pining for the good ole' days of President Tito, who ruled with an iron fist and kept the warring tribes apart. The youth with naive ideology ruling their hot blood, are quick to fight, but slow to shake hands and make up, or even live begrudgingly in the land of their fathers in peace.
Some of those grudges go back to before Roman Times. The Slavs have a fierce fighting spirit, and will hold grudges for centuries. This is but a minor conflict, but it could flare up to a far wider issue if obstinate hot heads prevail.