> "What the world needs to do, what Europe needs to do, is stand up on its two feet"
Advocating ultra-nationalist, anti-internationalist policies is, precisely, what leads to the mass conflict the grandparent was talking about.
There's no reason for the US to maintain the overwhelming global military presence that it does, particularly in Europe. World War 2 is over, and the US will never actually go to war with an enemy like Iran, Russia or China, or any country that might actually pose a legitimate threat to global security, so why keep up the pretense of being the "world's policeman?"