History is long enough to dig up as many examples to "prove" a certain antagonism exists.
How many times has Russia invaded or attempted to invade other Orthodox countries?
* Ukraine 2014-ongoing
* Georgia in 2008
* Declared war on Bulgaria 1944
* In cooperation with Nazi Germany, it annexed Moldova from Romania 1940
* Genocide against Ukrainians 30s and 40s
* Ukraine and Georgia again in 1917, 1918
* Declared war on Bulgaria: 1915
* Supported the Serbian invasion of Bulgaria 1886
* Harsh military occupation of Moldova and Wallachia 1829-1834
* Annexed Bessarabia from Moldova 1809
* Annexed Georgia in 1800
* Invaded the Cossack Hetmanate in 1659
And so on, back to the Middle Ages, when Northern Russian princes sacked Kiev.
Does this "prove" that as a historical rule Russia invades any Orthodox country it shares a border with? Should we blame modern-day Russians for things their un-elected government did before they were born?
Also, Russia has invaded 2 Orthodox countries in the last 10 years, this is very different from digging up ancient history.