
VIDEO: After four years of war, Ukraine’s lines are holding. Russia’s battlefield gains have stalled as Ukraine amps up its strike campaigns. The cornerstone of Ukraine’s defense is the Fortress Belt, a concentration of four large cities that Russia hasn’t been able to seize since 2014. ISW Director of Innovation and Open Source Tradecraft @georgewbarros explains why the Fortress Belt is optimized for defense across nearly every possible topographical and geographical characteristic relevant for military terrain analysis.
















