Donbaskie fortresses have a weak point. Expert explained how Russians take advantage of Ukrainians

Putin's troops already control even about two-thirds of Constantinów – the confederate redoubt of the alleged "belt of fortresses" of Ukraine in the Donetsk Oblast. They slow approach the main centres – Slavianska and Kramatorska. German military analyst Julian Röpcke points out that this does not bode well for Kiev. In open territory Ukrainians can defend themselves for months or even years. However, as the Russians enter the cities, their predominance fades," he pointed out in an interview with Radio Swoboda.