International matches should not ever have these “flares” or pyro-technics around.
When Fulham England hosted Wisla Krakow a few years ago, a lot of smoke, not really flares here but I remember reading about this game. http://www.dailymail.co.uk/sport/football/article-2057240/Fulham-4-Wisla-Krakow-1-Johnson-double-proves-Cottagers-Poles-apart.html
Whatever one defines the Balkans as, they have had a lot of great teams and a lot of great players.
Romania, Greece, the proper Former Republic of Yugoslavia.
A lot of good teams.
I saw a show that said that the Krakow derby between Wisla and Cracovia is the most violent of any in Europe.