1. The United States in many ways already has achieved global domination. We are the richest country, we consume the greatest share of the world's resources, and it is our culture (whether for ill or good

) which permeates the farthest corners of the earth.
2. Does achieving global dominance (in the way you are implying) necessarily involve invading every country in western Asia? Of course not. Remember, there are a couple of important points:
A. That resource rich countries follow an economic structure which makes them conducive to favorable trade with global corporations. This often involves adhering to SAPs and austerity programs, as well as privatizing most aspects of their economies.
B. That the governments of these nations, whatever be their form of governance, are flexible and ultimately beholden to the US (and by proxy, US Corporations).
Controlling (either directly or through willing governments) resources like oil is very important, and will be for a long time to come. Some posters here have mentioned hydrogen-fueled vehicles as a debating point about our quest for resource control, as in, we don't need to control the oil, we're going to be using less and less anyway. But this doesn't really hold water. According to the National Hydrogen Energy Roadmap, produced by the administration and the energy industry, given current infrastructure, the production method used to make most of the hydrogen, at least for the next decades, will be mostly coming from traditional fossil fuel plants.
On a larger level, why would we NOT seek global domination? I think that there are many who are very afraid that if we don't move to control the oil, someone else will, and we may well not care for the result.
So whether the dominance we are seeking is to be explained in classical empire terms, or as the facilitating method to further enrich the mega conglomerates, I have no doubts that domination is definitely the name of the game.
I think that for many, the questioning of Mr. Bush and his administration is more a questioning of both the
method of achieving the goal, and also the
nature of the dominance, should it be achieved. It may even be philosophically correct to question the attempt at global domination, however, as a fan of history, I would say questioning
that would be rather moot and from an action point of view, rather aimless. We are following a script written a long, long time ago. I think the biggest ideological battle in the world today is over exactly that: the nature of globalization, and the method of achieving it.