We've been made mingling with the Poles for the last 3 days without any bother in Nice. They fully expect Russian fans to get together with the Ukranians. They're not worried about it either, in their words "We're ready". When they play Germany trouble's inevitable too.
On an unrelated issue there'll be a minute's applause at the Ukraine game in Lyon for the 25 year old NI fan who fell off a wall & died in Nice. Poor lad.