- Russian mass troops on the Ukrainian border – warn against Kyiv Euromaidan Press
- Russian offensive campaign assessment, May 20, 2025 Institute for the study of war
- Russian mass troops near the Kharkiv Oblast before a possible attack, warned military Independent kyiv
- Russia building troops near the border with the Kharkiv Oblast, Ukrainian forces say Ураї operated
- Ukraine is preparing for a Russian summer offensive Royal United Services Institute
Russian mass troops on the Ukrainian border – Again, Kyiv warns – Euromaidan Press
