In the Brezhnev era of Vladimir Putin's youth, May 9 was an occasion for Soviet militarism, a celebration of weapons and might.It could be forgotten, at least for a moment, that Leonid Brezhnev's war of choice would be fought and lost in Afghanistan less than two decades after he began the May 9 celebrations, much as what is likely Mr. Putin's last war is today being fought and lost in Ukraine.