Russian Aviation Expert, Ex Putin Ally Dies After Falling From Stairs l Kremlin Going After Critics?

A former Putin ally and top aviation expert has become the latest Russian official to fall to his death in mysterious circumstances. Anatoly Gerashchenko, the former rector of the Moscow Aviation Institute (MAI), died on September 21. Gerashchenko reportedly slipped and tumbled down a flight of stairs at the institute's headquarters in Moscow. Watch the video to find out more about string of mysterious deaths of Russian officials.