They have tried that in Vietanm and Afghanistan ...both times unsuccessful . US not perfect at all BUT they don't try to assimilate countries , to own them as Xi has done with Tibet and Putin is doing with Crimea and eastern provinces ....and possibly more of Ukraine .
If Putin could move on any old iron curtain countries he would , to re-establish the empire . He's not a Stalin , more a throwback to the Tsars and some in Russia I believe call him that (quietly .
The will of the people ....Ukraine for Ukrainians and Taiwan for the Taiwanese .