‘It’s the beginning of the end’ of the American security order

Trita Parsi, Vice President of the Quincy Institute, has declared that the American security order is entering its final phase. Parsi, who directs a think tank focused on reducing U.S. military interventions abroad, suggests that the post-World War II system of American military and political dominance globally is now in terminal decline. The assessment reflects growing debate among foreign policy analysts about whether U.S. hegemony—long underpinned by military superiority, alliance networks, and economic leverage—can be sustained amid rising powers, shifting geopolitics, and constrained resources. The characterization carries weight in policy circles as the Trump administration pursues a more nationalist foreign policy stance that challenges traditional alliance commitments and international order. Parsi's conclusion aligns with broader discussions about how the United States will navigate great-power competition and define its role in a multipolar world.