NRO brings a bit of Rick Santorum's speech to the National Press Club. He sums up what we are fighting. Most excellent:
We are not fighting a War on Terror anymore than we fought a war on blitzkrieg in World War II. Terror like blitzkrieg is a tactic used by our enemy, not the enemy itself. We are fighting against Islamic fascists. They attacked us on September 11th because we are the greatest obstacle to their openly declared mission of subjecting the entire world to their fanatical rule. I believe that the threat of Islamic fascism is just as menacing as the threat from German Nazism and Soviet Communism. Now, as then, we face fanatics who will stop at nothing to dominate us. Now, as then, there is no way out; we will either win or lose.
He also says:
The largest piece of this mosaic, the keystone of the Islamic fascist structure, is Iran. It’s a complex mosaic, stretching across the world, but Iran is the central piece, touching all the others in one way or another. Iran not only supports these organizations — it created Hezbollah and Islamic Jihad, and is the driving force behind Hamas — but it is a threat to the civilized world all by itself.