John Prine's "Sam Stone" is the best ever written. Doesn't talk about any war in particular and no country either. Then I'd have to say for pure longevity Pete Seeger.

Joe MacDonald was also one of my favorites (he served in the Navy during the war in Viet Nam).

The above has to be for pure impact on a community though. The best ever for anti-war writings are Holiday and Martin. A couple of Viet Nam combat Veterans that wrote songs I still am unable to listen to without crying. Even on my best days.

Steve