So far Trump has alienated Australia, spurred Saudi ambitions in the Middle East, destabilized the NATO alliance, slapped the world in the face by withdrawing from the Paris Climate Accord, adversely affected world order, insulted Mexico and antagonized Germany .
With all his insistenance on making America great again Trump's nationalist foreign police is flawed since it assumes other nations will always respond rationally to America's might. But other nations have leaders responsible to their populations and these are not always rational. This , in turn, affects the leadership which affects that country's foreign policy and hence Americe.
In the end then, America is more likely to achieve its foreign goals through a foreign policy that reflects the idea that success requires cooperation on many issues and a reasonable respect for others , and not just a naked reliance on force.