OK, I'm stating the bleeding obvious.
However, this site contains a 27 page .pdf file on the corporate profit issues that might have underpinned the Iraq invasion and two related articles. There is also discussion on the euro vs dollar. The articles are nearly a year old so it might be old hat. However, some people might not have seen them and the main file discusses some very interesting issues that are still relevant today, particularly so if we consider the neocons' antipathy to Iran.
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The Bush Administration identified that Iraq could meet ever increasing U.S. demand for oil, and that other potential long term sources carried either substantial risks, or simply couldn’t meet the perceived demand. The U.S. ignored the fact that these energy needs could be met through conservation and renewable technologies. But it’s not simply a matter of a foreign policy based on securing future oil reserves. Control of Iraq’s oil means in large part control over the economies of Europe, China, Russia, and any other present or future rivals to U.S. economic dominance. The world economy, particularly oil, is traded in U.S. dollars, making the dollar the de facto world currency. When Iraq switched from selling its oil in dollars to euros in 2000 and encouraged the rest of OPEC to do the same, it presented a much more direct threat to U.S. hegemony than any weapon of mass destruction ever could.
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http://www.pressurepoint.org/Download the three .pdf files in the section titled "Revealed: Oil at Heart of Bush Takeover of Iraq" - first is a 4 M/byte file so not 56K-friendly. The others are about 140 K/bytes each. (There's something buggy with the individual file path to the first paper so I've posted the whole site)