Ключевые слова: aggression, anti tank, antitank, antitank hedgehogs, armed, army, barrier, block, blockhouse, concrete, concrete barrier, construction, defence, defense system, donetsk, dragon teeth, dragons tooth, europe, forces, fortification, fortifications, infrastructure, line of defense, military, military engineering, military facility, protection, tank, ukraine, ukraine war, war, war in ukraine, war ukraine, warfare, warrior,