Vladimir Putin, sanctions a lot of killings. This would not be dissimilar to his, "modus operandi." It takes a hell of a lot of power, threats and assassinations, to hold the Russian Federation of States, together. With all of, Russia's diversity in the terms of: cultural diversity, organized crime syndication, the (CIS) Commonwealth of Independent States (always at Russia's, throat, and Grozny.Vladimir Putin is a tough cookie. I think he did it.