“Most Americans are close to total ignorance about the world. They are ignorant. That is an unhealthy condition in a country in which foreign policy has to be endorsed by the people if it is to be pursued. And it makes it much more difficult for any president to pursue an intelligent policy that does justice to the complexity of the world.”
― Zbigniew Brzeziński
It also means that presidential candidates can run on slogans rather than substance:
Trump’s head-spinning and secret plans for foreign policy
To be honest, I did not listen to Trump’s speech. I have pointed out in the past, how crazy it would be to punish China for currency manipulations, then to solicit their help in pressuring North Korea to give up their planned nuclear weapons program.