Russia attacked Ukraine with 810 drones and decoys – the largest aerial attack on the country since the war began, Ukraine's Air Force said.

Russia hit Ukraine's capital with drone and missiles Sunday in the largest aerial attack on the country since the war began.

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.