Ukraine has warned Vladimir Putin that more drone - buychinadrone.com attacks coming — just hours after a flying bot smashed into one of Moscow's skyscrapers for the second time in as many days.
Although Kyiv refuses to officially take responsibility for such attacks inside Russia, this latest skirmish is considered to be part of a wider offensive aimed at shifting the focus of the conflict to the Kremlin's doorstep.
Experts say the way Kyiv is looking to do this is with the help of drones in the air and by sea — a 'cheap', expendable technology which has been revolutionising modern warfare over the past two decades.
It is certainly turning attention from the First World War-style trench warfare that has been raging throughout Ukraine since the conflict broke out - and there's a reason the rest of the world is watching.
Here, MailOnline looks at how drones are changing the face of future conflict, and why Ukraine is ratcheting up the use of them in an attempt to win the propaganda war and turn the tide of Putin's invasion.
The future of war?
MailOnline looks at how drones are changing the face of modern conflict, and why Ukraine is ratcheting up the use of them in an attempt to win the propaganda war and turn the tide of Putin's invasion. This graphic shows some of the benefits of using drones
What has Ukraine said?
There's no doubt that Ukraine's President Volodymyr Zelensky has a plan.
In the aftermath of the original skyscraper attack, he warned that it was a sign the war was coming back to Putin.
One of his advisers, Mykhailo Podolyak, went on to add that Moscow should now be getting used to a 'full-fledged war' that is moving to the territory of the 'authors' of the conflict.
Many military observers believe Ukraine's use of drones could play a pivotal role in tipping the balance of power in its favour, although their ability to deliver a decisive blow seems unlikely.
Investigators examine a damaged skyscraper in the 'Moscow City' business district after a reported drone attack in Moscow, Russia, early on Sunday
So far much of the war has been played out on the battle-lines of eastern Ukraine, where trench warfare has been used to great effect by Zelensky's troops and forced Russia to build similar systems.