Thieu Flees Saigon: South Vietnam Collapses

South Vietnam's president delivered a bitter, rambling resignation on live television, denouncing the United States as a faithless ally before fleeing the country. On April 21, 1975, Nguyen Van Thieu stepped down after a decade in power, blaming Washington for abandoning South Vietnam by cutting military aid while North Vietnamese forces closed in from every direction. "The United States has not respected its promises," Thieu declared. "It is inhumane. It is not trustworthy. It is irresponsible." Thieu's departure was the political collapse that preceded the military one. North Vietnamese troops had been advancing since March, sweeping through the Central Highlands and capturing Da Nang, South Vietnam's second-largest city, on March 29. The South Vietnamese army, demoralized and undersupplied, disintegrated in a series of panicked retreats that produced some of the war's most harrowing refugee crises. Columns of civilians and soldiers fled south along Highway 1, strafed by their own side's abandoned equipment now in communist hands. Thieu had ruled South Vietnam since 1967, initially as part of a military junta, then as an elected president in contests widely regarded as rigged. He was authoritarian, corrupt, and deeply suspicious of rivals, but he was also the figure Washington had chosen to prop up as the face of South Vietnamese governance. His relationship with the Nixon administration was transactional: Thieu accepted the Paris Peace Accords of 1973 only after Nixon secretly promised continued American military intervention if the North violated the agreement. Congress blocked that promise. Nine days after Thieu's resignation, Saigon fell to North Vietnamese tanks. Thieu himself flew first to Taiwan and eventually settled in suburban Massachusetts, where he lived quietly until his death in 2001. His televised denunciation of American betrayal remains one of the Cold War's most searing public moments, a preview of how the war would be remembered by those left behind.