Ukrainian troops beat Russian troops unilaterally, taking advantage of the U.S.-based HIMARS range advantage
Still, we couldn’t hit an air base relatively behind the front line 
Because of the Russian military’s high-performance air defense batteries, the prevailing prediction was that they could intercept not only fighter jets but also ballistic missiles, so HIMARS would not be able to hit them
Suddenly, a Russian air base behind the front exploded like a firecracker
What’s the reason? 
It’s because of the U.S. missile
The AGM-88 HARM missile is an anti-radar weapon that tracks and strikes radar radiation
In other words, Russian air defense artillery guarding an air base in the rear were hit by the missile, and there are testimonies that more than 10 air defense artillery pieces were actually killed
So there’s nothing the Russians can do
Raising radar to intercept HIMARS -> AGM-88 HARM missile coming in
Turn off the radar to avoid AGM-88 -> HIMARS flies in
That’s how you got the prepayment LOL 
Because of the U.S.-backed weapons system, the Russians are doing nothing and being beaten unilaterally
There are rumors that Putin will sue the production company in anger at the graduation of the S-400 air defense battery