http://en.wikipedia.org/wiki/Tet_Offensive
Not vouching for it, but it seems fair.
THE KERRY CAMPAIGN
Thanks for that link ..
FYI ... Found this on the net
http://www.frontpagemag.com/Articles/ReadArticle.asp?ID=13121
How North Vietnam Won The War
(SNIP)
Question: How did Hanoi intend to defeat the Americans?
Answer: By fighting a long war which would break their will to help South Vietnam. Ho Chi Minh said,
"We don't need to win military victories, we only need to hit them until they give up and get out."
Q: Was the American antiwar movement important to Hanoi's victory?
A: It was essential to our strategy. Support of the war from our rear was completely secure while the American rear was vulnerable. Every day our leadership would listen to world news over the radio at 9 a.m. to follow the growth of the American antiwar movement. Visits to Hanoi by people like Jane Fonda, and former Attorney General Ramsey Clark and ministers gave us confidence that we should hold on in the face of battlefield reverses. We were elated when Jane Fonda, wearing a red Vietnamese dress, said at a press conference that she was ashamed of American actions in the war and that she would struggle along with us.
Q: Did the Politburo pay attention to these visits?
A: Keenly.
Q: Why?
A: Those people represented the conscience of America. The conscience of America was part of its war-making capability, and we were turning that power in our favor. America lost because of its democracy; through dissent and protest it lost the ability to mobilize a will to win.
Q: How could the Americans have won the war?
A: Cut the Ho Chi Minh trail inside Laos. If Johnson had granted [Gen. William] Westmoreland's requests to enter Laos and block the Ho Chi Minh trail, Hanoi could not have won the war.