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Parrot's Beak,region of SE Cambodia indenting S Vietnam. During the Vietnam WarVietnam War,
conflict in Southeast Asia, primarily fought in South Vietnam between government forces aided by the United States and guerrilla forces aided by North Vietnam. The war began soon after the Geneva Conference provisionally divided (1954) Vietnam at 17° N lat.
..... Click the link for more information. , it was a staging ground for Communist forces against South Vietnam. In Apr., 1970, U.S. and South Vietnamese forces invaded the region in an effort to destroy the sanctuary.