US has now grown old and is now suffering from ERECTILE DYSFUNCTION...
So no US has neither the strong will nor the sheer power to bring down China, Russia or for that matter even India.
Gosh they lost to the Gritty Vietnam the last war they actually fought with boots on the ground, all rest like gulf war, Iraq war, Afghanistan, Libya, Syria etc. were all Arial affair firing thousands of missiles and PGMs with very little on the ground.
If people are surprised with the Russian casualties then remember this that this real thing as Russians are fighting with their boots on ground and the results will be there for all to see when they actually capture all the land required with most of the infrastructure intact and common people residing there accepting the new regime..