Russian Offensive Campaign Assessment, September 19, 2025 (Institute for the Study of War)

Russian MiG-31 interceptor jets violated Estonian airspace on September 19.
European officials continue to discuss the creation of a defensive “drone wall” and provide military support for Ukraine following Russia’s violation of Polish airspace on September 9 to 10.
The Kremlin continues to reject blame for the Russian drone incursion into Poland’s airspace.
Russia is reportedly using joint energy ventures to sell military equipment to Vietnam and evade Western sanctions.
Russian forces continue to commit war crimes in Ukraine, including executions of civilians.
Russia continues to censor critics of its war in Ukraine, including critics of Russia’s handling of the Ukrainian incursion into Kursk Oblast.
Russian forces advanced in the Kostyantynivka-Druzhkivka tactical area and in eastern Zaporizhia Oblast, and near Lyman and Novopavlivka.

Russian Offensive Campaign Assessment Sept. 19, 2025 | ISW