Perspective: Whose oil is it, anyway?

SAN FRANCISCO: Today more than three-quarters of the world's oil is owned and controlled by governments. It wasn't always this way.

Until about 35 years ago, the world's oil was largely in the hands of seven corporations based in the United States and Europe. Those seven have since merged into four: ExxonMobil, Chevron, Shell and BP.

They are among the world's largest and most powerful financial empires. But ever since they lost their exclusive control of the oil to the governments, the companies have been trying to get it back.

Iraq's oil reserves — thought to be the second largest in the world — have always been high on the corporate wish list.

Read the rest at the International Herald Tribune