A 10-year-old is stabbed to death by a fellow student at an elite school. A teenager in an affluent village repeatedly knifes his math teacher to death. Teenage crime up almost a fifth in a year. Baby killers go free. Murderers wander the streets, pumped up from military service. And veterans commit scores of murders after returning from a brutal meat-grinder war. The dark and bloody scenario would be the stuff of nightmares and dystopian novels. “This is the price of the war Putin started,” Olga Romanova, the founder of Russia Behind Bars, told the Daily Beast. “Putin pardoned over...