the dollar's underlying asset is Gold. At some point these SWF will shortsell the dollar and go into other currencies. As all the commodities are denominated in dollars, No wonder! Marc Faber gave a price target of 3500 US$ for Gold.
The commodity cycles according to Jim Rogers are of 17-20 year time spans. The cycle of boom which began in 1999 would last for that timeframe. We will see Gold at that level.
Think about it. Central Banks are printing currencies like there is no tomorrow. There is excess liquidity. Nobody wants to be a farmer. The commodities are in short supply. They can be increased only in time. No wonder Jim Rogers is through with US stocks.