I was listening to an interview with Michael Barone. In talking about Viet-Nam, he said (I paraphrase) we can talk about Viet Nam, but only if you agree that Viet Nam would’ve been better off if the North had not won. If you can’t say that we have nothing to say to each other.
In Depth: Michael Barone
http://www.booktv.org/program.aspx?ProgramId=8392&SectionName=In%20Depth&PlayMedia=No
I watched that interview too