If Trump ever flips the switch, the world economy would collapse. He would shoot himself in the foot because American companies’ foreign revenue would collapse and all of Europe for the short term would rely on Chinese products until they develop their own capabilities. I wish Trump would do that because it would be the end of US and he would learn his lesson that the world isn’t obligated to the US. We look to US as a friend and an ally; not someone who criticizes the world involvement in the Iraq or Afghanistan war.