Look at the record-high price of oil. Even if the same amount of oil is being pumped out of the ground, since it is traded in dollars and the dollar has weakened, the price of oil has increased to make up for the lost value of the dollar, creating a sort of vicious cycle.
Oil-producing countries don't want to keep all the dollars they are getting for their oil, since it's worth less, so they are diversifying and converting their dollars into euros or other currencies. That pushes more dollars back out into currency markets, which in turn pushes down the dollar's value.
One analyst told ABC News that Russia used to have 90 percent of its financial reserves in dollars. It now has 45 percent in dollars, 45 percent in euros and 10 percent in British pounds.
What Does This Mean in the U.S.?
The news is mixed. It's good, because it makes what we produce here cheaper to sell in foreign markets, and that in turn spurs exports of our products around the world. That translates into more manufacturing and more jobs. For example, BMW and Mercedes Benz want to build cars in the United States, because they can do it cheaper in nonunion states than in Germany, where they'd pay labor and parts in euros, and then bring the cars to the United States, where they would be too expensive to sell at a profit.©abc news