Egypt marked with a church service today a year since jihadists bombed a Russian airliner carrying holidaymakers from a Red Sea resort.<br/><br/> The Islamic State group claimed it brought the plane down on October 31 last year, saying it had smuggled explosives into the aircraft before its departure from the resort of Sharm El-Sheikh.<br/><br/>All 224 people on board were killed when the bomb went off minutes after the Metrojet A-321 had taken off for the Russian city of Saint Petersburg.