You really don’t know what was keeping Russia and China from conquering the world before 1991?
Russia is getting stronger than ever, and you are calling to give Russia a free hand to reconquer and return to the power and vast populations, and vast lands that they held in 1991, but this time, you don’t want us to be holding them at bay.
That means that the Russian/Red China goals of the “cold War”, would be attained, and that means that they conquer us in time as well.
So far, the US can’t even defeat a ragtag bunch of goat lovers in the Middle East. Neither could the Russians, for that matter. The US is broke, we are filling our country with illegal immigrants and Muslims, and we have stretched our military to the breaking point.
What exactly is Europe doing for us? Let them take care of their own problems.
The time for world domination by one country is past. Smaller and smaller groups are able to wield power and weaponry that only large nation states had previously.
Suggested reading - The Sovereign Individual by Rees-Mogg and Davidson, and The Transformation of War by Martin van Creveld.
If the US doesn’t take care of the problems we have in our own country, we won’t be able to do anything abroad.