Mike Shuster

Iran is stockpiling gold. That's the way David Cohen sees it. He's undersecretary of the Treasury, and the Treasury's point man for the banking sanctions the U.S. has imposed on Iran.

"Iran is attempting to hoard gold, both by acquiring it and by preventing the export of gold from Iran, in a somewhat desperate attempt to try and defend the value of its currency," Cohen says.

Iran is hurting. Economic and banking sanctions, plus an effective oil embargo led by the European Union, have brought chaos to Iran's economy. The bottom fell out of its currency, the rial, a couple of weeks ago, provoking street protests. Iranians of all social classes are struggling to cope.