Experts in the art of war consider this battle more important than that fought Hostile_encounter at Grunwald ; and if you consider the danger , ardour and endurance of the combatants , it certainly should rank higher . ''

Experts regarded Perception_active the bomb Attack to be designed Create_artwork to look spectacular on CCTV for the purposes of 'armed propaganda ' rather than to cause Causation large numbers of injuries Bodily_harm .

Experts suspect that Doku Umarov , an Islamist militant Hostile_encounter who has called Request for suicide Killing terror Terrorism attacks Attack and has a history of supporting Supporting past attacks Attack , was behind the attacks Attack in Volgograd .