I agree. America cannot do it on its own.
But the world can.
But they haven't and will not.
What good did The League of Nations
What has the United Nations
done to correct world poverty?
What can they do?
Bring water to North Africa?
Bring peace to the Middle East?
Supply cheap energy to the world?
Eliminate repressive regimes?
Create enough good paying jobs for China, India, and the rest of the world.
Nope, not a chance.
Woulda? Shoulda? Coulda? .....yes.
In reality, sadly, just, not a chance.
WHO is going to make this world a better place?
History is proof that Mankind is rather much, ah, just too flawed. Knowing this, protect and strengthen our own, help others as best as one can.
Is this a selfish stance?
Yes, and one that will keep 'us' (U.S.) and our 'likely' future alive.
Us and them, never lost favor with this, our Fate.