- Russia has started constructing defensive structures around the occupied southern Ukrainian city of Mariupol. Two plants are producing concrete pyramidal anti-tank structures, known as dragon’s teeth, for this purpose.
- Dragon’s teeth have likely been installed between Mariupol and Nikolske village; and from northern Mariupol to Staryi Krym village. Mariupol forms part of Russia’s ‘land bridge’ from Russia to Crimea, a key logistics line of communication.
- Dragon’s teeth have additionally been sent for the preparation of defensive fortifications in occupied Zaporizhzhia and Kherson.
- Russia is fortifying its lines throughout areas of occupation. On 19 October 2022, Wagner Group owner Yevgeny Prigozhin claimed the construction of a fortified ‘Wagner Line’ of defences in Russian-occupied Luhansk Oblast.
- This activity suggests Russia is making a significant effort to prepare defences in depth behind their current front line, likely to forestall any rapid Ukrainian advances in the event of breakthroughs.
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