Graham Greene’s 1955 novel *The Quiet American* established a prophetic critique of American foreign policy by illustrating how well-intentioned idealism in foreign interventions produces devastating unintended consequences. Set during the First Indochina War in Vietnam, Greene’s narrative contrasted British cynicism with naïve American interventionism, foreshadowing the tragic trajectory of the Vietnam War and subsequent U.S.
military entanglements across the global landscape. Seventy years after its publication, the novel's thematic framework continues to challenge core assumptions regarding American exceptionalism, institutional arrogance, and ideological certainty in international affairs. While contemporary geopolitical shifts, including the rise of populist non-interventionism under Donald Trump, signal a departure from traditional liberal internationalism, the fundamental dilemmas identified by Greene remain central to debates over American power. Ultimately, the evolution of U.S. foreign policy reflects an ongoing struggle between interventionist impulses and structural realities, demonstrating how ideological innocence often masks strategic vulnerability and destabilizes regional balances of power.