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Ukraine21 Apr

Russia fires S-400 from Kursk at Ukrainian aviation

Russian forces launched an S-400 air defense system from Kursk Oblast targeting Ukrainian aircraft over Sumy Oblast.

Sources
1 verified
Location
Kursk Oblast, Russia; Sumy Oblast, Ukraine
Updated
Tuesday, 21 April 2026 at 06:27 UTC
No media · text-only dispatch
Synthesis · 1 sources
Russian air defense forces have launched an S-400 long-range surface-to-air missile system from Kursk Oblast in Russia. The target was Ukrainian aviation operating over Sumy Oblast in northeastern Ukraine. This represents a cross-border use of advanced Russian air defense assets to contest Ukrainian airspace. The engagement highlights the ongoing intensity of the air war along the northern front.
e/eineurope · topic · T-02675