03/28/2008 02:45 am ET Updated May 25, 2011

Oil-Producing Countries On Global Shopping Spree

Flush with petrodollars, oil-producing countries have embarked on a global shopping spree.

With a bold outlay of $7.5 billion, the Abu Dhabi Investment Authority is about to become one of the largest shareholders in Citigroup.

The bank had already experienced the petrodollar's power this month when another major shareholder, Prince Walid bin Talal of Saudi Arabia, cleared the way for the ouster of its chief executive, Charles O. Prince III.

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