Russia is not really taking seriously USA . Is relying too much in their nuclear weapons
Of course Russia is taking the USA seriously, but what do you expect them to do?
Spend 80% of their GDP on weapons to catch up?
Do you think that would even help or just make things worse?
Russia can't afford to spend at the rate the US spends and can't actually afford to have equivalent forces, yet in many areas it actually manages to design and build comparable and even better system and produce them for itself and for export.
Russia doesn't need to be able to defeat the US... Vietnam even on its best day have never had the forces and capabilities to invade and defeat the US... but they didn't need it. What they needed was the cold hard will to continue fighting long after the US had given up the fight and continue to take hits and take pain while continuing to give hits and give pain the US was no longer prepared to take.
Russia is in a much better position than any other country on the planet to "defend" itself from the US... at the moment that is largely because of its nuclear forces, but its conventional potential is enormous and is rapidly growing. you want them to have it now and I can understand that, but it didn't happen over night for the west it took decades and trillions of dollars and it wont come over night for Russia either... no matter how much they spend.
BTW can I ask where the figures for the capacity of the Kurganets APC came from?
Are they official sources or guesstimates?
As the firepower of an infantry squad increases with increased communications and more accurate rifles and the ability to call in artillery and air strikes I rather suspect the number of troops in a unit will decrease anyway.