OK, gabjaking, you must be a economics genius or something, the way you figure out the real motivations of international diplomacy. Please bestow on us a mere nugget of your amazing insight: how exactly does the US get the "money and oil" that they couldn't get off the free market before invading Iraq? Surely you aren't suggesting that the US is secretly building a pipeline to New Jersey and sucking Iraq dry for free are you. No, you wouldn't subscribe to such a crude idea as that. You must know some more subtle, yet ingenious method. Yes, Iraq had a UN embargo before the invasion and could only export oil for money to be used for food and medicine. The thing is, the U.S. was the major impetus behind that resolution, and it was the Europeans that were sneakily making huge profits by circumventing it (documents have been found in Iraq substantiating this). So the argument that the invasion was to allow Iraq to export oil doesn't seem reasonable. So far, the only money transfers I have heard about are from the US congress that keeps passing huge expenditure bills to pay for Iraqi infrastructure improvements, like powerplants and sewage plants that were neglected for decades so that Saddam could pay for his massive military. (that the Russians and French were all to happy to sell him). So by all means, tell me how the US is making huge money from this invasion?
As to your question about the rest of the oppressed world: well the US did stop the government in Serbia and help put Slobodan Milosevic on trial for genocide of, oh my god, Muslims! In Somalia, they sent troops so that food aid would get through to the starving people. Well, pretty much the entire population of Mogadishu attacked them and killed something like 15 soldiers, so they left. With limited resources, I don't think the US is going to send 10 divisions to every hot spot in the world. That should be the responsibility of a unified United Nations that is resolved to fight tyranny. With conflicting self interests though that is never going to happen. For example, both France and Russia PROFITED hugely from Saddams regime, and therefore did not want their cushy deals to be disrupted.