Plans for Thompson to cover the 1976 presidential campaign for "Rolling Stone" and later publish a book fell through after Wenner canceled the project without informing Thompson. Wenner then assigned Thompson to travel to Vietnam to cover what appeared to be the end of the Vietnam War. Thompson arrived in Saigon just as South Vietnam was collapsing and as other journalists were leaving the country. Again, Wenner pulled the plug on the project. The incidents strained Thompson's relationship with Wenner and "Rolling Stone."