Russia is strengthening its positions in the areas of occupation in the south and east of Ukraine, hoping to prevent a quick breakthrough of the Ukrainian defenders. This is stated in the intelligence report of the British Ministry of Defense.
The invaders began to build defensive structures around Mariupol. For this purpose, reinforced concrete pyramidal anti-tank structures, known as «dragon's teeth», are produced at two factories. In particular, such structures are installed between Mariupol and the village of Nikolskoye and from northern Mariupol to the village of Stary Krym. Mariupol is part of the Russian «land bridge» from Russia to Crimea, a key logistical link.
«Dragon's teeth» additionally sent to prepare defensive fortifications in the occupied Zaporozhye and Kherson regions. In addition, on October 19, the creator of PMC «Wagner» Yevgeny Prigozhin announced the construction of a fortified «Wagner line» in the Russian-occupied Luhansk region.
Intelligence notes that these activities indicate that Russia is making significant efforts to prepare deep defenses behind the current front line, in order to likely prevent any rapid Ukrainian advance in the event of a breakthrough .