The End of the Long American Century: Trump and the Sources of U.S. Power

"Even as Trump has correctly identified the way in which the United
States is strong, he is using that strength in fundamentally
counterproductive ways. By assailing interdependence, he undercuts the
very foundation of American power. The power associated with trade is
hard power, based on material capabilities. But over the past 80 years,
the United States has accumulated soft power, based on attraction rather
than coercion or the imposition of costs. Wise American policy would
maintain, rather than disrupt, patterns of interdependence that
strengthen American power, both the hard power derived from trade
relationships and the soft power of attraction. The continuation of
Trump’s current foreign policy would weaken the United States and
accelerate the erosion of the international order that since World War
II has served so many countries well—most of all, the United States.
Order rests on a stable distribution of power among states, norms that
influence and legitimize the conduct of states and other actors, and
institutions that help underpin it. The Trump administration has rocked
all these pillars. The world may be entering a period of disorder, one
that settles only after the White House changes course or once a new
dispensation takes hold in Washington. But the decline underway may not
be a mere temporary dip; it may be a plunge into murky waters. In his
erratic and misguided effort to make the United States even more
powerful, Trump may bring its period of dominance—what the American
publisher Henry Luce first called “the American century”—to an
unceremonious end."
(Foregin Affiars: The End of the Long American Century: Trump and the
Sources of U.S. Power by Robert O. Keohane and Joseph S. Nye, Jr)