In the last 30 months, an estimated 17 Russian officials, politicians, businessmen and leading figures in the arts have died after falling from high windows. The window on the fifth floor of a building in the historic city of Petrozavodsk in northwestern Russia was wide open when the figure of a man appeared briefly, before plunging to the ground. This was followed by Putin enforcing a "blanket ban" on social media apps from enemy countries. The mangled body of former police colonel, Artur Pryakhin, head of the Federal Antimonopoly Service in the republic of Karelia, was hauled off to the...