Many of the drones aren’t particularly fast or high-tech, but they are cheap enough for the Kremlin to launch more than 700 in one night, in an effort to overwhelm Ukraine’s air defenses. Here’s what we know.

The aggressor launched the drones from Shatalovo, Kursk, Millerovo, and Primorsko-Akhtarsk in Russia. Air defenses shot down or neutralized 36 Russian drones across northern, eastern, and central Ukraine.