I never said they are not working ...but the Russians have a limitless supply chain to replace them, they are insignificant numbers compared with the size of the Russian armed forces. However, these weapons are ineffective against cruise missiles, ballistic missiles, long range artillery, etc...to the Russians, knocking out a few thousand pieces of outdated armour and losing around 15,000 troops is peanuts...you rednecks still do not yet understand this, because you're used to hiding behind your carpet bombing of civilians and children in Iraq and Afghanistan, and afraid of heavy losses...the Russians simply don't care.