Russian police are readying for Tottenham's game against CSKA Moscow on Tuesday, the first visit by an English club to Russia since clashes between the two countries' fans marred the European championship, though a repeat of that mass violence appears unlikely.
Russian and English fans clashed repeatedly in Marseille before and after their Euro 2016 group stage game in June.
Groups of Russian fans arrived well prepared for trouble, equipped with mouth guards and martial arts gloves, and French police struggled to cope, deploying tear gas and water cannon.
Russian fan leaders who were in Marseille for the June violence have been warned against a repeat performance, and Tottenham has urged its fans to keep a low profile.