"They're holding so many dollar reserves right now," he added, "that if they changed their policy, they'd just be devaluing themselves."

The flow has helped the country amass significant dollar reserves.

The Saudis began by drawing on the huge dollar reserves built up when oil prices were high.

Such a move lowered its huge dollar reserves and helped slow the dollar's recent rise.

Some $900 million left the country on Monday, cutting dollar reserves to less than $50 billion.

This caused an even bigger decline in the dollar reserves.

Then, it is forced to buy T-bills, creating more dollar reserves.

And foreign countries are beginning to hold smaller dollar reserves.

This, in turn, caused an even more dramatic decline in the dollar reserves.

One month later British gold and dollar reserves had dwindled to their lowest ever point, $12 million.