Not some government-manufactured unit like the fiat dollar, but gold, for peace, trade, and prosperity. As the empire's currency collapses--as Hazlitt, Mises, Rothbard, Hoppe, Salerno, Hulsmann, and Ron Paul have predicted--even the Establishment is noting the evil of monetary nationalism and the destructive chaos of 150 floating fiat currencies, and calling for a return to an improved 19th-century style international gold standard. Note to Dr. Steil: while mainstream economists have been worse than useless, the Austrian economists have gotten it right. (Thanks to Dennis Lubahn.)