Donald Trump's presidency changed how allies and adversaries perceive the United States and its role in the global community [1, 2].
This shift in perception is critical as the U.S. reaches its 250th anniversary [2]. The change reflects a broader debate over whether the nation remains a reliable leader of the international systems it helped build after 1945.
Analysts said Trump's rhetoric, diplomatic style, and policy choices undermined the liberal international order [1, 2]. This system, which lasted roughly 80 years [1], was designed to maintain global stability through cooperation and shared democratic values. During and after his term from 2017 to 2021, the perception grew that the U.S. was moving away from these foundational principles [1, 2].
Peter Baker said on PBS NewsHour's Washington Week that the previous understanding of the world order is over [1]. This sentiment suggests that the era of unquestioned U.S. leadership in the liberal order has concluded.
Other assessments describe the current state of U.S. foreign policy as a departure from previous norms. The Guardian analysis team said that for both allies and adversaries, the U.S. at 250 is a solid global citizen gone rogue [2].
These changes were particularly evident in the latter half of the 2010s [1]. The transition in global perception has left allies questioning the reliability of U.S. security guarantees, and adversaries seeing an opportunity to challenge the existing power structure [2].
“Our understanding of what we thought the world order was for the last 80 years is over.”
The erosion of the post-World War II liberal order signifies a transition from a unipolar world led by the U.S. to a more fragmented global landscape. As the U.S. celebrates 250 years of existence, the tension between its historical role as the architect of global stability and its more recent isolationist tendencies creates a vacuum that other global powers may seek to fill.
