60 years is well chosen - it avoids WWII.
The US started the Korean war? The US started the uprising against France in Vietnam? The US started whatever it was that consumed Eritria/Ethiopia in the 70s/80s? The US started all of the Saharan and sub Saharan"skirmishes"? The US started Darfur? The US started Bosnia?
The US did manage to win the cold war, no thanks to the beneficiaries. Yes, I'm talking about Europe. Now that they don't have anyone threatening them, they're talking smack. When that changes, they'll tell us how they've always been our BFFs. (Which will it be? Russia? China? Their Islamic friends?)
It's well past time for the EU to take responsibility for things instead of telling the US how it should be done. Surely there are some problems that are within their capabilities. And, speaking of capabilities, shouldn't they have significant capabilities? After all, they have 500M people and a greater GDP than the US.
However, the author is correct. The US should let the rest of the world alone. Whether the result is better or worse, they'll get what they want and deserve.
Sadly, people can be persuaded to allow all manner of things, if they're led to believe that their way of life is under threat.
Thomas Jefferson put it better than I ever could: “He who trades liberty for security deserves neither and will lose both.”
"You have biggest number of homeless in the world, even children and so we can continue whole day... but I still hope there are some people there who understand this and can do something with that."
is patently false. If America minded it's own fucking business, things would be much better.