Riot police stand guard in front of the Croatian embassy during a protest in Belgrade August 4, 2009. Serbia marked on Tuesday the 14th anniversary of Croatia's military "Operation Storm", which crushed the rebel Serb "Krajina Republic" and led to the exodus of some 200,000 Croatian Serbs. REUTERS/Marko Djurica (SERBIA ANNIVERSARY CONFLICT)
REUTERS/MARKO DJURICA