You obviously know nothing of "the Battle of Kosovo", or the fact that during WWII the Serbs told Nazi Germany to go pound salt and got almost as many bombs dropped on them as Dresden but didn't back down. And you have forgotten that these are the same Serbs who were bombed for 78 straight days including Easter in 1999, and their answer was to wear tee shirts with bull's eyes on them.
A little hint --never play "chicken" with a Serb!
People don't really understand about Kosovo and the Serbs.
It is the Serbian "ancestral homeland", not just a piece of ground.
Serbians have been fighting to defend that piece of land for 1200 years, and taking on all comers.
Sometimes they win, sometimes they lose, but they never give up..
Rest assured, this is not over.