Iron Triangle
the name U.S. forces in the Vietnam War gave to the Communist stronghold region northwest of Saigon
en-GB/ˈaɪən ˈtɹaɪæŋɡəl/
en-US/ˌaɪɹn ˈtɹaɪˌæŋɡəl/
the name U.S. forces in the Vietnam War gave to the Communist stronghold region northwest of Saigon