In this New Republic ($) Online article, Daniel Drezner does a good job of concisely analyzing the Iraq War plan and the execution of its goal. The entire article is well worth reading, and the following is a tidbit to pique your interest:

Say what you will about the neoconservatives’ skills at manners or management; their big idea cannot be dismissed lightly. There is a compelling logic to the argument that the primary source of frustration among Arabs in the Middle East is a sense of powerlessness. Trapped in a region littered with authoritarian and corrupt regimes, they are encouraged by these regimes and their Islamic critics to blame their situation on Israel and the United States. This is an ideal environment for fomenting terrorism. Creating an open society in Iraq would put the lie to this kind of hate-mongering.
To be sure, democracy promotion is far from easy. Indeed, regime change in the Middle East looks like a lousy, rotten policy option for addressing the root causes of terrorism, until one considers the alternatives–appeasement or muddling through. The latter option was essentially the pre-9/11 position of the United States and its allies, and has been found wanting. Appeasement or isolation has the same benefits and costs that the strategy had in the 1930s: It buys short-term solace but raises the long-term costs of facing a stronger and potentially undeterrable adversary.
For all their criticism of Bush’s grand strategy, Europeans and left-wingers have offered very little in the way of alternatives to his vision. Some say that American soft power could bring about change in the Middle East. But decades of alternately coddling, cajoling, and ostracizing Arab despots has not led to liberalization or democratization. We have showered Egypt with aid, but have succeeded only in propping up an authoritarian monster in Hosni Mubarak. We have tried to isolate Syria, but have only strengthened that country’s anti-American credentials. Maybe U.S. soft power is part of the solution to the Middle East’s woes, but soft power alone cannot accomplish our desired ends.
The craft of foreign policy is choosing wisely from a set of imperfect options. While flawed, the neoconservative plan of democracy promotion in the Middle East remains preferable to any known alternatives.