The families of Australian victims of the MH17 tragedy have written a heartbreaking open letter warning soccer fans this year's World Cup in Russia is “under a dark shadow”. In May, prosecutors investigating the downing of Malaysia Airlines Flight 17 over eastern Ukraine in 2014 say they identified the missile used to shoot down the plane as coming from a Russian military unit. All aboard died, two thirds of them Dutch and 38 of them Australian residents. “That a sophisticated weapon belonging to the Russian Army was dispatched and used to shoot down a civilian aircraft should be of grave...