History not only repeats, it gets worse
A few years ago on holiday in Istanbul I went to the military museum. On display was what was claimed to be the original Ottoman flag flown at the battle of Kosovo in 1448 (but it looked like a replica to me) . This battle was between the Turks and Hungarians. The Ottomans won and went on to capture Serbia and the rest of the Balkans, before going on to take Constantinople in 1453.
After the successful Greek revolt against the Ottomans in the 1820s, the Greeks came up with the Megali Idea (Big Idea). They wanted to recapture Constantinople for Christianity.
It's not only not over, it's hardly started. And once more the Russians are involved.
Only odd numbered world wars start in the Balkans. Oh!