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.

A terminal belonging to the natural gas company Novatek has caught fire in the port of Ust-Luga after a drone attack in Russia's Leningrad Oblast. Source: Latvia-based Russian media outlet Meduza, citing the company Details: The fire was reportedly caused by "falling drone debris".

Ukraine launched a wave of drone strikes on Russia Sunday, triggering a fire at a nuclear power plant as it celebrated Ukrainian independence day against a backdrop of fading hopes for recent peace efforts.