This page points to the cons against the latest and greatest target of the U.S. MilitaryIndustrialComplex -- which U.S. President Dwight D. Eisenhower warned us against. If you want the pros of going to "war," just take a look at U.S. main-stream media.
L. Reichard White [send him mail] taught physics, designed and built a house, ran for Nevada State Senate, served two terms on the Libertarian National Committee, managed a theater company, etc. but his hobby is explaining things he wishes someone had explained to him. You can find a few of his other explanations here.