And is quite often true. This is largely because the Balkans has been used as Europe's chessboard for centuries. Everybody from the Turks to the Germans to even the French have screwed around in Balkan politics.
When it come to Germany, think Drang Nach Osten -- The Drive Eastward-- tried WWI, WWII and in the 1990's. Originally, Poland & Czechoslovakia were the targets, but the Balkans proved much less protected and more vulnerable.
There are German fingerprints all over the destruction of Yugoslavia, including the faked BND report that was used as an excuse for the 1999 NATO Bombing.
Germany blamed Serbia for WWI and its aftermath in Germany. WWII, Germany bombed the crap out of Belgrade in Operation Punishment, one of the first terror bombings of the war and it killed thousands. But Operation Punishment and Serb resistance cost Germany precious time, delaying Operation Barbarossa into Russia, and this is what cost Germany the war. (I also recall reading, during the 1999 NATO Bombing of Yugoslavia, that one of the NATO pilots was the grandson of one of the Luftwaffe pilots who had bombed Belgrade in 1941.)
Lots of bad blood between Germany and Serbia, going back nearly a century -- and Germans are not exactly the forgiving type.
“Lots of bad blood between Germany and Serbia...”
And there is lots of bad blood between US citizens that were outraged at Clinton’s cowardly bombing of Serbian civilians, to benefit Muslims who wanted half the Serbian land - and got it.