Assuming for a moment that you're not a liar and a troll - a dubious assumption at best - we aren't at war with Catholicism.
Mostly because Catholicism is a civilized religion. A claim that [i]slam is incapable of making.
Cardinals and Fathers aren't flying planes into buildings, teaching hate in Vatican square, and beheading anyone they can capture who isn't a Catholic.
When at war, it is of vital importance to keep your enemy off balance at all times. Over 2100 years ago Sun-Tzu referred to it a disrupting the enemies alliances.
If your enemy is so pathetic that mildly satirical cartoons throws him off balance then, have at it. You're stupid if you don't.
We aren't at war with Islam, either. There are more than 1 billion moslems in the world. What percentage of them are strapping on the vests and blowing people up?
It always seems as though history has stopped at whatever moment we are at. Today, almost all of the wars across the globe have at least one side that is Islamic. Therefore, Islam is a religion of war and destruction.
If this were 1917, then the logical conclusion would be that Christianity is the religon of psychopathic maniacs.