The Russian Voronezh-DM early-warning radar near Armavir, Krasnodar region of Russia, was destroyed.

https://en.wikipedia.org/wiki/Voronezh_radar

According to WP, Russia has seven of these installations operational (well, maybe six now). They're pretty new, been brought into use over the past decade.

Holy shit. That's part of their strategic defence network against a nuclear attack. That'll piss them right off.