"Russia stations troops on the border with Ukraine" - you mean ON RUSSIA'S OWN BORDER.

Thanks for pointing out a fundamental difference between the US and Russia when it comes to Europe and NATO: Russia operates on its own territory whereas the US "appropriates" the territory of other states.

This is why Putin - correctly - points out that the US does not have allies; it has vassals.

As far as Russia "invading other countries" is concerned, I direct you again to the geographic evidence and the fundamental difference between what Russia did in the bordering countries of Afghanistan, Georgia and Ukraine and what the USA has done in Afghanistan, Iraq, Somalia, Lebanon, Yemen, Syria, Mali, Grenada, Cuba, Panama, Honduras, Congo, Niger, Bosnia, Libya, Angola, Vietnam, Cambodia, Laos, and on and on.