Russian businessmen may want to reconsider standing too close to windows. At least 38 have died under mysterious circumstances since Russia invaded Ukraine, a Post analysis found — and in at least 10 cases officials claimed the deceased committed suicide by plunging from windows and balconies. Three business leaders died just last month, and another this week, sparking renewed debate and speculation the Kremlin — known to silence its critics and political foes — had a hand in the defenestration