Kerry is caling VN, "Nixon's war." Nixon took office in 1969. SOD McNamara wrote a mia culpa, explaining all the mistakes he made while serving under Johnson. Kerry is dispicable. OBTW In 1972 Nixon won one of the biggest landslide victories in Presidential history.
Assuming Nixon would have been inaugurated about January 20, 1969, he would have been in office a whole month before Kerry came home from Vietnam for good. That's one month of "Nixon's [very much inherited] War" to IIRC three months of "Johnson's War." [Kerry spent a total of about four months on swift boats in Vietnam.]
It will always be "Nixon's War" to the left. They're allowed to lie.