The Iraq War is not related with oil? After the US invasion, the biggest oil fields in the country were sold to foreign companies. Let's make a breakdown of Iraq's biggest oil fields:
West Qurna (21 billion barrels proven reserves, second largest in the world): Co-owned by Italian, Russian, Chinese, Malaysian, Dutch, British and American companies.
Az-Zubayr field (4.5 billion barrels proven reserves): Co-owned by Italian (%33), Iraqi (%25), US (%23), South Korean (%19) companies.
Halfaya field (4.1 billion barrels): %50 Chinese, %25 Malaysian and French
Majnoon Field (3 billion barrels): %45 Dutch, %30 Malaysian, %25 Iraqi
Iraq has the largest oil fields in the world, and they don't even own half of their fields. You do realize the world has a shortage of fuel, right?