This.
Plus:
- America gets soft power in return, countries keep American interests in eye too. This requires understanding the concept of win-win versus the you lose-I win mentality.
- Economic contraction. There is not much growth and prosperity in a world of feuding dictatorships. Incentives in those systems are opposite to global well fare.
For American oligarchs, like for their Russian counter parts, there might be some insane short-term opportunities. Chances for the sharks, not for you though. You are fish.