The Pentagon Papers: what the government knew and what it said

Officially titled "United States-Vietnam Relations, 1945-1967: A Study Prepared by the Department of Defense," the Pentagon Papers were commissioned by McNamara in 1967 as a classified historical study of American decision-making in Vietnam. McNamara assigned the project to the Vietnam Study Task Force under Leslie H. Gelb, director of Policy Planning and Arms Control for International Security Affairs at the Department of Defense. Daniel Ellsberg, then at the RAND Corporation and one of the country's most prominent defense analysts, was among the researchers who worked on the study.

The study was completed in January 1969, when Gelb presented it to incoming Defense Secretary Clark Clifford. It was classified Top Secret and Sensitive. Only 15 original copies were produced. Five went to the incoming Defense Secretary. One each went to the Kennedy and Johnson presidential libraries. The remaining copies went to McNamara and senior officials. The study covered five presidential administrations from Truman through Johnson, analyzing every major decision point in American involvement in Indochina from 1945 through May 1968.

The study's central finding, as Ellsberg later described it, was that each administration had known the war was going badly and had continued it anyway, while telling the public and Congress something different. The study confirmed this pattern across four administrations. It documented the specific memoranda, intelligence assessments, and internal analyses that contradicted official public positions. That documentation is what made it dangerous to publish and decisive when it was.

On August 2, 1964, North Vietnamese patrol torpedo boats attacked the USS Maddox in the Gulf of Tonkin. That attack was real. On August 4, 1964, the Johnson administration reported a second attack on the Maddox and the USS Turner Joy. President Johnson addressed the nation. Congress was convened. The Gulf of Tonkin Resolution was passed on August 7, authorizing the President to use military force in Southeast Asia without a formal declaration of war. Approximately 58,000 Americans would die in the war that followed.

The August 4 attack did not happen. The Pentagon Papers documented serious doubts about the second attack even in 1964. The more complete account emerged when the National Security Agency declassified nearly 200 documents in 2005 and 2006, including NSA historian Robert J. Hanyok's comprehensive study of the Tonkin Gulf intercepts, written in 2001 and published in the classified NSA Cryptological Quarterly before its declassification. Hanyok conducted a full analysis of the signals intelligence records from the night of August 4 and concluded there was no attack. His study determined that intelligence officials had deliberately omitted the overwhelming body of reports when presenting evidence to policymakers. The reports they omitted would have demonstrated that no second attack had occurred.

Hanyok's specific finding on how the NSA presented its intercept evidence: officials "deliberately skewed" the signals intelligence record to support the conclusion that an attack had taken place. They selected intercepts that appeared to support an attack and omitted the far larger body of intercepts that did not. The NSA's own official history on Vietnam, declassified in 2007, examined the full evidence and concluded there was no incident in the Gulf of Tonkin on August 4, 1964.

The Gulf of Tonkin Resolution, obtained using evidence intelligence officials knew was incomplete and selectively presented, gave the Johnson administration the authority to escalate a war that would last another decade. The resolution was not repealed until 1971, the same year the Pentagon Papers were published.

The Pentagon Papers document a consistent pattern across four presidencies. The Truman administration provided military and financial support to France's colonial war in Indochina beginning in 1950, framing it as Cold War necessity while the State Department privately acknowledged the French effort was unlikely to succeed. The Eisenhower administration refused to permit the nationwide elections required by the 1954 Geneva Accords, which ended the French-Indochina War. The accords required elections in 1956 to reunify Vietnam. The CIA estimated that Ho Chi Minh would receive approximately 80 percent of the vote. The elections were blocked. The Pentagon Papers document the internal deliberations concluding that the United States and South Vietnam could not win a free election against the communist forces.

The Kennedy administration privately acknowledged the weakness of the South Vietnamese government and the ineffectiveness of its military while publicly describing the situation as improving. Kennedy increased the number of U.S. military advisors from approximately 900 to over 16,000. The administration was directly involved in the November 1963 coup that overthrew President Diem, who was then killed. Internal documents show senior officials knew the coup was coming and did not act to stop it. The public account described American non-involvement.

The Johnson administration's internal record is the most extensively documented in the study, and the most stark in its gap between private knowledge and public statement. Internal analyses throughout 1966 and 1967 concluded that the bombing of North Vietnam was not achieving its stated military objectives and was not degrading North Vietnam's capacity to supply the insurgency in the South. McNamara's own memos to the President document this assessment clearly. Publicly, administration officials claimed the bombing was effective and progress was being made.

The Pentagon Papers include a series of McNamara memoranda to President Johnson that document the Defense Secretary's private conclusions about the war. By October 1966, McNamara was telling Johnson that the military situation was "generally not satisfactory" and was unlikely to change significantly. By May 1967, he was describing the war as having reached a military stalemate. He recommended stopping the bombing of North Vietnam.

By November 1967, McNamara's assessment had hardened further. He wrote to the President that the war was acquiring a momentum of its own that must be stopped. He described Westmoreland's latest request for additional troops as something that could lead to a major national disaster. He recommended a fundamental reassessment of strategy.

Johnson did not adopt McNamara's recommendations. McNamara left the Defense Department in February 1968, shortly before the Tet Offensive, which demonstrated to the American public in January and February of that year that the progress officials had been describing publicly did not match the reality of the war. McNamara's private assessments had documented that gap for years before Tet made it undeniable.

In his 1995 memoir, McNamara wrote that he was wrong, terribly wrong and expressed regret that he had not done more to end the war earlier. The Pentagon Papers provide the primary source record of what he knew and when he knew it.

Daniel Ellsberg had worked on the Pentagon Papers study as a RAND analyst. Having read the full classified document, he concluded that it contained information the American public had a right to know. After unsuccessfully approaching several members of Congress, he secretly photocopied the full study and provided it to the New York Times. The Times began publishing excerpts on June 13, 1971. The Washington Post and other newspapers received copies and began publishing their own excerpts.

The Nixon administration obtained a temporary restraining order from a federal judge in New York, the first time in U.S. history that the government had obtained prior restraint against a major newspaper's publication. The case reached the Supreme Court in 15 days, an extraordinary pace reflecting the stakes involved. On June 30, 1971, the Court ruled 6 to 3 in New York Times Co. v. United States, 403 U.S. 713, that the government had not met the heavy burden required to justify prior restraint of the press. Publication resumed.

The full 7,000-page document, with approximately 34 percent that had never been made public before, was released by the National Archives, the Kennedy Library, the Johnson Library, and the Nixon Library in June 2011, on the 40th anniversary of the leak. It is available in full, without redaction, at the National Archives.

The Pentagon Papers are not new. They were published in 1971. What has not existed until now is a compiled searchable HTML transcription of the key primary source findings, the specific McNamara memos, the Gulf of Tonkin NSA documents, and the Supreme Court rulings, in one readable place with plain English context for what each document actually confirms.

The pattern the Pentagon Papers document is the same pattern confirmed in the Three Mile Island NRC documents, the COVID Fauci emails, and the JFK Hoover and Katzenbach memos also on this site: private knowledge of a situation that diverged from the public account, with the gap documented in the government's own records. What makes the Pentagon Papers the clearest example of this pattern is scale , four administrations, 23 years, 7,000 pages , and the existence of an NSA historian's explicit conclusion that intelligence officials deliberately distorted the evidence used to justify the war's escalation. That finding is in the government's own classified documents. It is now searchable.