Footage shows a border guard writing 'for Ukraine' on a bomb before attaching it to a drone that then drops it on a Russian target.
It comes as Vladimir Putin is desperately scrambling to cover up the extent of the economic damage caused by western sanctions.
The Sun newspaper brings you the latest breaking news videos and explainers from the UK and around the world
Become a Sun Subscriber and hit the bell to be the first to know
Read The Sun: www.thesun.co.uk
Like The Sun on Facebook: www.facebook.com/thesun/
Follow The Sun on Twitter: twitter.com/TheSun
Subscribe to The Sun on Snapchat: www.snapchat.com/discover/The_Sun/1633225139