After spotting a Russian tank sitting idle next to some buildings with their drone, the Ukrainians decide to let the tankers know that they've been spotted by dropping a grenade on them.

While it's unlikely that the grenade did any significant damage to the vehicle, you can bet that any Russian tankers on the inside will be thinking twice about getting out of their armor in the near future. Of course, there's always the chance that the grenade may have damaged some optics or non-essential kit stowed on the outside of the tank, but the real victory over the Russian tank crew in this footage is psychological.