Thomas Copeland and Fridon Kiria
BBC Verify

We’ve just verified a video released by Ukraine’s military intelligence service showing what appears to be a series of drone strikes on Russian aircraft.

The video, which features dramatic background music and video game-style graphics edited in, includes infrared footage of two strikes on Be-12 Chayka amphibious planes, as well as an Mi-8 helicopter being attacked.

The Soviet-era amphibious aircraft, meaning they are able to take off on water as well as land, are designed to target submarines and conduct maritime patrols.

“This is the first defeat of a Be-12 in history,”, external the Main Directorate of Intelligence (HUR) said in its post on Telegram. We are not able to verify the authenticity of this claim.

By matching the pattern of runways and buildings we’ve managed to geolocate the footage to an airfield close to Sevastopol in Crimea, which has been illegally occupied by Russia since 2014.

Reverse image searches also indicate that the footage is newly uploaded because it has not appeared on the internet before today.

Our team are speaking to military experts now so that we can bring you analysis of the significance of these strikes later.