Both liberal and conservative critics of Donald Trump’s foreign policy believe that the U.S. president has done enormous damage to America’s array of global alliances. It’s easy to understand why: Trump has repeatedly questioned the value of NATO; picked senseless fights with democratic leaders in Europe, Asia, and North America; and, more recently and controversially, betrayed the Kurds. The Economist believes the damage “will take years to mend” and warns darkly that “these concerns represent the unravelling of the order that America worked hard to build and sustain in the decades since the second world war.”
Walt, Stephen. "How to Tell if You’re in a Good Alliance." Foreign Policy, October 28, 2019.