Football fans gathering ahead of decisive matches

Football fans are gathering in their national colors in the

Polish cities of Warsaw and Wroclaw ahead of two decisive games at

the European Championship that will determine who advances to the

quarterfinals.

Thousands of Russia supporters are in Warsaw to watch their team

play Greece, with police on high alert for a potential repeat of

clashes between Russian and Polish hooligans that marred a group

match between the fierce rivals on Tuesday.

The two countries were enemies for centuries and authorities

fear more street brawls in the capital. Police used rubber bullets

and tear gas to combat Tuesday’s violence and more than 200 arrests

were made.

In Wroclaw, co-host Poland plays the Czech Republic to decide

the other quarterfinalist from Group A.