Ukraine has got strategic advance with the drones (Russia didn't get the message 2 years ago when the air defense Pantsir systems got slaughtered in Syria by th

Ukraine has got strategic advance with the drones (Russia didn't get the message 2 years ago when the air defense Pantsir systems got slaughtered in Syria by those drones). Such a huge advance is though temporary - those Russian air defenses need upgrade to deal with the drones, and it will be done in the near future. So, Ukraine got window of opportunity to solve Donbass the way Azerbajan solved the Karabah using the same drones a year ago. So Russia is trying to prevent it by the public buildup of forces in the way which clearly shows that it can cut Ukranian Donbass forces from the rest of the country by scissor invasion from North and South behind those forces if Ukraine makes a move on Donbass now. Such invasion will be with huge losses and will cost Russia a lot and is very risky, and Russia doesn't want it (at least not at the cost it is going to be at right now), and i'm not sure that Russia can really pull it right now, yet it is the only response Russia got for now, thus such a public build-up of the forces looking a lot like bluffing in poker.