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.

Since the evening of 21 August, Russian forces have launched 55 Shahed strike drones and decoy UAVs against Ukraine; 46 of them have been neutralised, but hits have been recorded. Source: Ukraine's Air Force Quote: "As of 09:00,

In a stunning escalation, Russia unleashed one of the largest overnight strikes since its invasion of Ukraine began, firing 614