At first, I miss read the thread title as clones and not drones…
…but yeah, drones are everywhere and they’re getting cheaper all the time. They are potentially small with a small radar footprint, or just flying below what radar sees by using the terrain….& and relatively quiet…& even with a relatively small payload (the oversized Toys “R” Us versions)… a couple of kilograms of C4 delivered relatively pinpoint accurately, it is a game changer.
Drones, do not have to be the military grade versions to make a big difference. They’ve come along way from the US military, super expensive versions that would continuously have weddings break out below them as they dropped their munitions.