Ukraine confirmed no withdrawal by 31 July; ISW's 31 July assessment showed Ukrainian forces maintaining positions in northeastern Kostyantynivka, with control still contested.
Kostyantynivka resolves YES if Ukraine's General Staff or commander-in-chief confirms withdrawal from the town, or if both ISW and DeepState map it as fully Russian-held, by 23:59 Kyiv time on 31 July 2026. Source of truth for territorial control: Institute for the Study of War daily assessments and Ukrainian General Staff statements.
Russia has claimed a major Ukrainian stronghold four times in this war. Each of those cities did fall in the end, but Russia has more than once announced the capture before it was true. Each capture cost months of fighting and tens of thousands of casualties.