@Advocate,
Where do you get your information? Eisenhower was most definitely not the cause of the Vietnam war. Have you heard of the Gulf of Tonkin incident? LBJ expanded the situation into a full blown war. Check your history. I have argued with libs before that want to blame Eisenhower, or Nixon, but its all a pretty empty argument, the primary guy that started the war was LBJ, and next in line would be JFK.
In regard to WWII or any other war, I simply looked at the presidents in charge, not justifications, as that is debatable for every war. I did make a distinction about the Civil War because it is unique among wars in that we fought ourselves, a Republican led Union against a Democratic led Confederacy, so I think the responsibility should be shared in that case.
Remember, I am not judging fault, I am only noting which party was in power when wars occurred. I believe the Civil War was justified, as I do World War II, as well as other wars, but there are people that do not believe they were justified. My link takes all fault out of the equation, and simply enumerates all the wars since our founding by which party held the presidency. It clearly shows that Republicans are no more in favor of war than Democrats, historically, and in fact the evidence may indicate just the opposite, which clearly debunks your baseless speculation about the Cuban missile crisis.
I kind of like the link I posted already. Here it is again. For anyone, click the link and then start the video that shows all the wars with the numbers by Democrat and Republican.
http://www.mapsofwar.com/ind/american-wars.html