According to the politician, Western nations need to understand that they are fighting on Ukraine’s side MOSCOW, November 22. /TASS/. Any escalation scenario is possible in the Ukraine conflict because of what the West is doing, Russian Security Council Deputy Chairman Dmitry Medvedev said. "If the escalation scenario continues to unfold, it won’t be possible to exclude anything because NATO countries have in fact joined the conflict," he pointed out in an interview with the Al Arabiya TV