"Russia Constructs Extensive Defensive 'Tsar Train' Barrier in Eastern Ukraine"

Russia has reportedly constructed an 18-mile defensive line in Ukraine using over 2,000 railway carriages, with satellite images showing the line running from Olenivka to Volnovakha and Mariupol. The purpose of this barrier is debated, with some suggesting it's for defense against potential Ukrainian attacks, while others believe it may serve other purposes. Russia's use of anti-tank ditches, trenches, barricades, and minefields has proven effective in withholding Ukrainian advances, making it difficult for Ukrainian forces to breach these layered defenses.