The end of U.S. involvement

On 15 January 1973, citing progress in peace negotiations, President Nixon announced the suspension of offensive action in North Vietnam which was later followed by a unilateral withdrawal of U.S. troops from Vietnam. The Paris Peace Accords were later signed on 27 January 1973, which officially ended U.S. involvement in the Vietnam conflict. This won the 1973 Nobel Peace Prize for Kissinger and North Vietnamese Politburo member and lead negotiator Le Duc Tho while fighting continued, leading songwriter Tom Lehrer to declare that 'irony had died'. However, five days before the peace accords were signed, Lyndon Johnson, whose presidency was marred by the war, died. The mood during his state funeral was one of intense recrimination because the war's wounds were still raw. However, there was relief that not only U.S. involvement in Vietnam ended, but also the chapter on one of the most tragic and divisive eras in America came to a close.

The first U.S. prisoners were released on February 11 and all U.S. soldiers were ordered to leave by March 29. In a break with history, soldiers returning from the Vietnam War were generally not treated as heroes, and soldiers were sometimes even condemned for their participation in the war. The peace agreement did not last. U.S. soldiers were consequently faced with the prospect of having won most of the battles of the war, but having "lost the peace".

Nixon had promised South Vietnam that he would provide military support to them in the event of a crumbling military situation, or a military offensive from North Vietnam, to convince the Thieu regime to sign the 'peace agreement'. But Nixon was fighting for his political life in the growing Watergate Scandal at the time, facing an increasingly hostile Congress, which held the power of appropriations, and a hostile public, sick of the Vietnam War. Thus, Nixon broke his promises to South Vietnam. Economic aid to South Vietnam continued (after being cut nearly in half), but most of it was siphoned off by corrupt elements in the South Vietnamese government, and little of it actually went to the war effort. At the same time, aid to North Vietnam from the USSR and China began to increase, and with the U.S. out, the two countries no longer saw the war as significant to their U.S. relations. The balance of power had clearly shifted to the North, and North Vietnam subsequently launched a major military offensive against the south.

In December 1974, Congress completed passage of the Foreign Assistance Act of 1974, which cut off all military funding to the Saigon government and made unenforceable the peace terms negotiated by Nixon. It was believed that any new military equipment shipped to South Vietnam would quickly fall into the hands of the victorious communists.

By 1975, the South Vietnamese Army stood alone against the well-organized and highly-determined North Vietnamese. Despite having a military force of more than one million men with modern equipment, the ARVN was plagued with corruption and desertion. Then in early March, the PAVN launched a powerful offensive into the poorly-defended Central Highlands, splitting the Republic of Vietnam in two. President Thieu was fearful that ARVN troops in the northern provinces would be isolated due to a PAVN encirclement. He decided on a redeployment of ARVN troops from the northern provinces to the Central Highlands. But the withdrawal of South Vietnamese forces soon turned into a bloody retreat as the PAVN crossed the DMZ. While South Vietnamese forces retreated from the northern provinces, splintered South Vietnamese forces in the Central Highlands fought desperately against the PAVN.

On March 11, 1975 Ban-Me-Thuot fell to the PAVN. PAVN's 3rd Army Corps (Tay Nguyen) began its attack in the early morning hours. After a violent artillery barrage, the 4,000-man garrison defending the city retreated with their families. On March 15, President Thieu ordered the Central Highlands and the northern provinces to be abandoned, in what he declared to 'lighten the top and keep the bottom'. General Phu abandoned the cities of Pleiku and Kontum and retreated to the coast in what became known as the "column of tears". General Phu led his troops to Tum Ky on the coast, but as the ARVN retreated, the civilians also went with them. Due to already-destroyed roads and bridges, the column slowed down, as the PAVN closed in. As the column staggered down mountains to the coast, PAVN shelling attacked. By April 1, the column ceased to exist after 60,000 ARVN troops were killed.

On March 20, Thieu reversed himself and ordered Huế, Vietnam's 3rd-largest city be held out 'at all cost'. But as the PAVN attacked, a panic ensued, and South Vietnamese resistance collapsed. On March 22, the PAVN launched a siege on Huế. The civilians, remembering the 1968 massacre, jammed into the airport, seaports, and the docks. Some even swam into the ocean to reach boats and barges. The ARVN were routed along with the civilians, and some South Vietnamese shot civilians just to make room for themselves to retreat. On March 25, after a 3-day siege, Huế fell.

As Huế fell, PAVN rockets hit downtown Da Nang and the airport. By March 28, 35,000 troops of PAVN's 2nd Corps (Huong Giang) were poised in the suburbs. On March 29, a World Airways jet led by Edward Daley landed in Da Nang to save women and children, instead 300 men jammed onto the flight, mostly ARVN troops. On March 30, 100,000 leaderless ARVN troops surrendered as the PAVN marched victoriously through Da Nang on that Easter Sunday. With the fall of Da Nang, the defense of the Central Highlands and northern provinces collapsed. With the northern half of South Vietnam under their control, PAVN prepared for its final phase in its offensive, the Hồ Chí Minh campaign, the plan: By May 1, capture Saigon before South Vietnamese forces could regroup to defend it.

The PAVN continued its attack, as South Vietnamese forces and the Thieu regime crumbled before their onslaught. On April 7, 3 PAVN divisions of the 4th Army Corps (Cuu Long) attacked Xuan-loc, 40 miles east of Saigon , where they met fierce resistance from the ARVN 18th Infantry division. For 2 bloody weeks, severe fighting raged in the city as the ARVN defenders, in a last-ditch effort tried desperately to save South Vietnam from military and economic collapse. Also, hoping US forces would return in time to save them, the ARVN 18th Infantry division used many advanced weapons against the PAVN, and it was in the final phase in which Saigon government troops fought well. But on April 21, the exhausted and besieged army garrison defending Xuan-loc surrendered. A bitter and tearful Nguyễn Văn Thiệu resigned on April 21, saying the USA had 'betrayed South Vietnam', and then displayed the 1972 document claiming the USA would retaliate against North Vietnam should they attack. Thiệu left for Taiwan on April 25, leaving control of the doomed government to General Dương Văn Minh.

Fall of Saigon

By April, the weakened South Vietnamese Army had collapsed on all fronts. The powerful PAVN offensive forced South Vietnamese troops on a bloody retreat that ended up as a hopeless siege at Xuan-loc, a city 40 miles from Saigon, and the last South Vietnamese defense line before Saigon. On April 21, the defense of Xuan-loc collapsed and PAVN troops and tanks rapidly advanced to Saigon. On April 27, 100,000 PAVN troops encircled Saigon, which was to be defended by 30,000 ARVN troops. On April 29, the U.S. launched Option IV, the largest helicopter evacuation in history. Chaos, unrest, and panic ensued as hectic Vietnamese scrambled to leave Saigon before it was too late. Helicopters began evacuating from the U.S. embassy and the airport. Evacuations were held to the last minute because U.S. Ambassador Martin thought Saigon could be held and defended. The operation began in an atmosphere of desperation as hysterical mobs of South Vietnamese raced to takeoff spots designated to evacuate, many yelling to be saved. Martin had pleaded with the U.S. government to send $700 million in emergency aid to South Vietnam in order to bolster the Saigon regime's ability to fight and to mobilize fresh South Vietnamese units. But the plea was rejected. Many U.S. citizens felt the Saigon government would meet certain collapse. President Gerald Ford gave a speech on April 23, declaring the end of the Vietnam War and the end of all U.S. aid to the Saigon regime. The helicopter evacuation continued all day and night while PAVN tanks reached the outskirts of Saigon. In the early hours of April 30, the last U.S. Marines left the embassy as hectic Vietnamese breached the embassy perimeter and raided the place. PAVN T-54 tanks moved into Saigon. The South Vietnamese resistance was light. Tank skirmishes began as ARVN M-41 tanks attacked the heavily armored Soviet T-54 tanks. PAVN troops soon dashed to capture the U.S. embassy, the government army garrison, the police headquarters, radio station, presidential palace, and other vital targets. The PAVN encountered greater than expected resistance as small pockets of ARVN resistance continued. By now, the helicopter evacuations that had evacuated 7,000 U.S. and Vietnamese had ended. The presidential palace was captured and the NLF flag waved victoriously over it. President Dương Văn Minh surrendered Saigon to PAVN colonel Bùi Tín. The surrender came over the radio as Minh ordered South Vietnamese forces to lay down their weapons. Columns of South Vietnamese troops came out of defensive positions and surrendered. Saigon fell on April 30, 1975. As for the people of South Vietnam, many stayed in South Vietnam but by May 1, 1975 most U.S. citizens had fled, leaving the city of Saigon forever. Finally, despite the fact that the United States military had decisively won most major engagements, and had withdrawn troops from the country two years earlier following a peace accord, the Vietnam War is widely considered the USA's first defeat, with over 58,000 dead and many left severely injured. As for the people of South Vietnam, over a million ARVN soldiers died in the 30-year conflict. Three million communist soldiers and Vietnamese civilians also died.

North Vietnam united both North and South Vietnam on 2 July 1976, to form the Socialist Republic of Vietnam. Saigon was renamed Hồ Chí Minh City in honor of the former president of North Vietnam. Thousands of supporters of the South Vietnamese government were rounded up and sent to "re-education" camps. Communist rule continues to this day.

On 21 January 1977, U.S. President Jimmy Carter pardoned nearly all Vietnam War draft evaders.

Casualties

Estimating the number killed in the conflict is extremely difficult. Official records from North Vietnam are hard to find or nonexistent and many of those killed were literally obliterated by bombing. For many years the North Vietnamese suppressed the true number of their casualties for propaganda purposes. It is also difficult to say exactly what counts as a "Vietnam war casualty"; people are still being killed today by unexploded ordnance, particularly cluster bomblets. More than 40,000 Vietnamese have been killed so far by landmines and unexploded ordnance.

Environmental effects from chemical agents and the colossal social problems caused by a devastated country with so many dead surely caused many more lives to be shortened.

The lowest casualty estimates, based on North Vietnamese statements which are now discounted by Vietnam, are around 1.5 million Vietnamese killed. Vietnam's Ministry of Labor, War Invalids and Social Affairs released figures on April 3, 1995, reporting that 1.1 million fighters—Viet Cong guerrillas and North Vietnamese soldiers—and nearly 2 million civilians in the north and the south were killed between 1954 and 1975. Other figures run as high as 4 million civilian casualties with 1 million casualties being NVA or VC fighters. Robert McNamara, in his regretful memoir of the war, references a figure of 3.2 million. The number of wounded fighters was put at 600,000. It remains even more unclear how many Vietnamese civilians were wounded.

Of the U.S. military, 58,226 were killed in action or classified as missing in action. A further 153,303 US military personnel were wounded to give total casualties of 211,529. The United States Army took the majority of the casualties with 38,179 killed and 96,802 wounded; the Marine Corps lost 14,836 killed and 51,392 wounded; the Navy 2,556 and 4,178; the Air Force lost 2,580 killed and 931 wounded; with the lowest deaths in terms of numbers and percentages among the branches being the Coast Guard, with seven dead and 60 wounded.

U.S. allies took casualties as well. South Korea provided the largest outside force and suffered between 4,400 and 5,000 killed[6] full details including WIA and MIA appear difficult to find. Australia lost 501 dead and 3,131 wounded out of the 47,000 troops they had deployed to Vietnam. New Zealand had 38 dead and 187 wounded. Thailand had 351 casualties. It is difficult to locate accurate figures for the losses of the Philippines. Although Canada was not involved in the war, thousands of Canadians joined the U.S. armed forces and served in Vietnam. The US fatal casualties include at least 56 Canadian citizens. It is difficult to estimate the exact number because some Canadians crossed the border to volunteer for service under false pretenses whereas others were permanent residents living in the United States who either volunteered or were drafted. See also Canada and the Vietnam War.

In the aftermath of the war many U.S. citizens came to believe that some of the 2,300 US soldiers listed as Missing in Action had in fact been taken prisoner by the DRV and held indefinitely. The Vietnamese list over 200,000 of their own soldiers missing in action.

Both during and after the war, significant human rights violations occurred. Both North and South Vietnamese had large numbers of political prisoners, many of whom were killed or tortured. In 1970, two U.S. congressmen visiting South Vietnam discovered the existence of "tiger cages", which were small prison cells used for torturing South Vietnamese political prisoners (see Con Son Island). After the war, actions taken by the victors in Vietnam, including firing squads, torture, concentration camps and "reeducation," led to the exodus of hundreds of thousands of Vietnamese. Also war, economic problems in Vietnam led to the exodus of hundreds of thousands of Vietnamese. Many of these refugees fled by boat and thus gave rise to the phrase "boat people." They immigrated to Hong Kong, France, the United States, Canada, Australia, and other countries, creating sizable expatriate communities, notably in the United States.

Among the many casualties of the war were the people of the neighboring state of Cambodia. Approximately 50,000–300,000 died as a result of U.S. bombing campaigns. The bombing campaigns also drove some Cambodians into the arms of the nationalist and communist Khmer Rouge, who took power after the USA cut off funds for bombing them in 1973, and continued the slaughter of opponents or suspected opponents. About 1.7 million Cambodians were murdered or fell victim to starvation and disease before the regime was overthrown by Vietnamese forces in 1979.

Vietnam

Virtually every Vietnamese, especially South Vietnamese, was affected by the war, having endured large scale bombardments and targeted killings. During the war's height in the late 1960s, about half of South Vietnam's population of 20 million people have been displaced. To the northerners, fighting and hostility continued on with neighboring countries until 1989. Many Vietnamese lost relatives as a result of the war in general. The end of the war marked the first time that Vietnam was not engaged in substantial civil war or active military conflict with an external opponent in many years. North and South Vietnam were reunified under the Socialist Republic of Vietnam following the war.

Fear of persecution caused many highly skilled and educated South Vietnamese connected with the former regime to flee the country during the fall of Saigon and the years following, severely depleting human capital in Vietnam. The new government promptly sent people connected to the South Vietnam regime to concentration camps for "reeducation", often for years at a time. Others were sent to so-called "new economic zones" to develop the undeveloped land. Furthermore, the victorious Communist government implemented land reforms in the south similar to those implemented in North Vietnam earlier. However, it is as well to remember that large areas of land in South Vietnam had already been appropriated by the communists well before the end of the war—and their owners compensated for the loss by the South Vietnamese government. Persecution and poverty prompted an additional two million people to flee Vietnam as boat people over the 20 years following unification. The problem was so severe that during the 1980s and 1990s the UN established refugee camps in neighboring countries to process them. Many of these refugees resettled in the United States, forming large Vietnamese-American emigrant communities with a decidedly anti-communist viewpoint.

The newly established Republic of South Vietnam promptly implemented currency reforms. The dong previously used in South Vietnam was converted to the "liberation dong" at a rate of 500 old dongs to 1 liberation dong, essentially rendering much of the South Vietnamese money worthless. After unification in 1976, the liberation dong was abandoned in favor of a new unified dong. While the north exchanged at the 1:1 rate, the south had to exchange 10 liberation dong for each 8 unified dong. Private enterprises in the South were socialized. During much of the late 1970s and early 1980s, Vietnam underwent an economic depression and came close to famine.

The large number of people born after 1975 may be indicative of a postwar baby boom, and despite the devastating effect of the civil war on their parents' generation, a general disinterest in politics and recent history among this postwar generation of Vietnamese is notable.

The Soviet collapse in 1991 left Vietnam without its main economic and political partner, and thus it began to seek closer ties with the West. After taking office, U.S. President Bill Clinton announced his desire to heal relations with Vietnam. His administration lifted economic sanctions on the country in 1994, and in May 1995 the two nations renewed diplomatic relations, with the U.S. opening an embassy on Vietnamese soil for the first time since 1975.

The economic reforms known as đổi mới (renovation), instituted by the government since the late 1980s, have been producing spectacular results. Today, Vietnam is one of the fastest growing economies in the world, fueled by exports and foreign direct investment. In less than two years after the signing the bilateral trade agreement in 2001, the U.S. became the largest export market for Vietnam.