Russian hooligans have warned England fans that they are "100 percent guaranteed'' to be targeted at the 2018 World Cup.
There were scenes of violence at Euro 2016 as supporters of the two countries clashed, with two England fans left in a critical condition after three days of violence in Marseille while a group of Russian fans charged at England supporters inside the Stade Velodrome.
Vasily, who allegedly organised the trouble in Marseille, said: "They were special military forces of football hooligans sent by Vladimir Vladimirovich Putin to conquer Europe.''
Another hooligan, known as Denis and the leader of the 'Orel Butchers' group that was at the centre of the Marseille violence, said tactics honed domestically had given them the upper hand over England fans at Euro 2016.
"There is some street-fight tactics that we obviously exercised a lot of times fighting in cities,'' he said.
Speaking of next year's World Cup, he added: "They can come over and we'll see. Somebody will obviously try to do something, that is like 100 percent -- 100 percent guaranteed.''
"Have a family and children around you or something... if you are there with your male friend you should calculate on getting your a--- kicked.''
Another anonymous hooligan predicted: "For some it will be a festival of football, for others it will be a festival of violence. Our opponents are naturally the English because they are the forefathers of hooliganism and naturally they are always awaited.''
French prosecutors blamed a hardcore of "extremely well-trained" and "hyper-violent" Russian fans for much of the violence that erupted in Marseille over the summer, while UEFA had threatened to disqualify Russia from the tournament.
Putin himself weighed into the controversy over fan violence, declaring: "I don't know how 200 Russian fans could fight several thousand of the British."