Gulf of Tonkin SIGINT
Verified: Documented in primary records or confirmed by reputable inquiry/reporting.
NSA declassified 140+ documents in 2005; its historian's study says signals intelligence shows a reported second attack on 4 August 1964 did not occur.
Documented
NSA declassified 140+ documents in 2005; its historian’s study says signals intelligence shows a reported second attack on 4 August 1964 did not occur.
Claimed, disputed or not established
The historian’s study is NSA’s own reading of the intercepts.
Sources (opened in a new tab)
- National Security Archive: Tonkin Gulf press release (1 Dec 2005) ↗https://nsarchive2.gwu.edu/NSAEBB/NSAEBB132/press20051201.htm