Challenger 2 Tanks Easily Overcome Russian 'Dragon Teeth' in Video.
Ukraine's Ministry of Defense has shared a video of its Challenger 2 tank plowing through "dragon teeth" defensive barricades erected by Russian forces in occupied areas of Ukraine. "Dragon teeth" are pyramidal anti-tank obstacles made of reinforced concrete which have been used to impede the movement of tanks and mechanized infantry since World War II. The Challenger 2 tank is the U.K.'s main battle tank and is expected to be used as part of Ukraine's counteroffensive against Russia.