A Russian serviceman takes part in a joint military drill of the Collective Security Treaty Organization (CSTO) member states’ Collective Rapid Response Forces on Sept. 9, 2021. Vyacheslav Oseledko/AFP via Getty Images
In recent days, Western powers have been warning about and making diplomatic moves related to what they say is a concerning buildup of Russian troops near Ukraine. But a Canadian defence expert says although the situation is unpredictable, the risk of an invasion by Russia is slim.