Questions about the Gulf of Tonkin incidents have persisted for more than 40 years. But once-classified documents and tapes released in the past several years, combined with previously uncovered facts, make clear that high government officials distorted facts and deceived the American public about events that led to full U.S. involvement in the Vietnam War.
On 2 August 1964, North Vietnamese patrol torpedo boats attacked the USS Maddox (DD-731) while the destroyer was in international waters in the Gulf of Tonkin. There is no doubting that fact. But what happened in the Gulf during the late hours of 4 August—and the consequential actions taken by U.S. officials in Washington—has been seemingly cloaked in confusion and mystery ever since that night.
Nearly 200 documents the National Security Agency (NSA) declassified and released in 2005 and 2006, however, have helped shed light on what transpired in the Gulf of Tonkin on 4 August. The papers, more than 140 of them classified top secret, include phone transcripts, oral-history interviews, signals intelligence (SIGINT) messages, and chronologies of the Tonkin events developed by Department of Defense and NSA officials. Combined with recently declassified tapes of phone calls from White House officials involved with the events and previously uncovered facts about Tonkin, these documents provide compelling evidence about the subsequent decisions that led to the full commitment of U.S. armed forces to the Vietnam War.