Wikipedia:2003 to 2008 world oil market chronology
... Prices on June 27, 2008, touched $141.71/barrel, for August delivery in the New York Mercantile Exchange (after the recent $140.56/barrel), amid Libya's threat to cut output, and OPEC's president predicted prices may reach $170 by the Northern summer.
There's quite a lot to say about Iraq in there too, as you might imagine.
Plenty of interesting notes relating to the leadup to war with Iraq in the 2000, 2001 and 2002 pages as well.
Not that I'm attempting to suggest the coalition have anything in mind but helping to install Democracy and freedom in these countries of course.