Well it’s not just Russians. Poles and Hungarians have the same problem. Whether the Magyars, the Caucasians, the Mongols, the Muslims, Napleonic France, or the Germans all of that part of the world is ripe for conquest.
You can’t blame them. It’s history.
The modern British Empire, headed by the United States, consists of land either surrounded by water or by inhospitable terrain—United States, Australia, Britain, Canada, New Zealand. Just a different culture we are, primarily relying on sea power.
The fundamental cause of this war is that Russia is trying to control 10% of the world’s land with 2% of the world’s population.
That is not sustainable. Putin understands this. Annexing Ukraine and Belarus and adding 55 million people to Russia would correct that balance.
The only other alternative is Russia getting much smaller.
There is some advantage to Hungary on being west of the Carpathian mountains.