Flag of SEATO
SEATO founding members are highlighted in purple
The Southeast Asia Treaty Organization (SEATO), created by the Southeast Asia Collective Defense Treaty or the Manila Pact, was an international organization for collective defense established on September 8, 1954. It was primarily created to block further Communist gains in Southeast Asia. The organization's headquarters was located in Bangkok, Thailand. SEATO was dissolved on June 30, 1977.

History

Klaus Bollinger: NATO, CENTO, SEATO, OAS : imperialistische Paktsysteme, Berlin 1964 (German)
Kai Dreisbach : USA und ASEAN. Amerikanische Aussenpolitik und regionale Kooperation in Südostasien vom Vietnamkrieg bis zur Asienkrise, Trier 2004, ISBN 3-88476-656-2 (German)
Nikolaj Semenovich Merzljakov.: SEATO, Moskau 1958 (German)