It is impossible to evaluate events in Russia today without understanding the mysterious series of bombings in 1999 that killed 300 civilians and created the conditions for Vladimir Putin to become Russia’s dictator for life. The bombings changed the course of Russia’s post-Soviet history. They were blamed on the Chechens. In the wake of initial success, Russia launched a new invasion of Chechnya. Putin, who had just been appointed prime minister, was put in charge of the invasion and his popularity soared. Six months later, he was elected president. On July 14, 2016, I filed a request for documents on...