Vietnam is a Southeast Asian country that was the site of a long and bloody WAR between North and South Vietnam, which lasted from 1954 to 1975. The WAR was fought between the communist forces of North Vietnam and the United States-backed South Vietnamese government. The term 'WAR' is an appropriate three-letter solution for this crossword, as it accurately describes the conflict that took place in Vietnam. Additionally, the term 'VETS' is a four-letter solution that refers to the veterans of the Vietnam WAR, who served in the armed forces of the United States and other countries.