What I don't understand is this idea thrown around that going to "war" with Tehran is simply bombing the supposed testing sites.

If we're that anal (understandable that it is) about Iran obtaining a nuclear arsenal, simply blowing up site A and site Z won't end the problem. If anything, that regime will keep at it, if not escalating their efforts. We'll be going back a few years later to do the same thing.

Fact is, the only solution then if diplomacy and tomahawk launches fail to satisfy this threat are then the two words politician are purposely avoiding saying, same words the Pentagon dreads more than anything in policy regarding Iran: Regime Change