The one ever more obvious difference today is that the “democratic dividend” that has been used to justify agressive US “Foreign policy” is now looking moribund – as threadbare as the regimes it tries to topple.
We may not agree the ethics and morals of Putin or other autocrats, but at least they often have some!! Predicability is a prime quality of leadership, but the only reliable prediction about Biden and the rest of the globalists is that when their mouths are open they are lying.
America is a great country and has some great men. Professor Mearsheimer is one of them.