Across his years in power, Putin has put a particular emphasis on the Soviet Union’s victory over Nazi Germany in what Russians call the “Great Patriotic War,” a grounding pillar of national identity. Putin himself re-introduced military hardware to the annual celebration back in 2008, showing off Russia’s stockpiles of tanks and munitions in a shift toward a more aggressive posture.“It’s not saber rattling,” he declared then. “We don’t threaten anyone, we don’t intend to,” Putin said. “It’s a demonstration of our growing defense capabilities.”Rena Marutian, professor of the department of global and national security at the Taras Shevchenko National...