US Dollar as world currency

"Zoellick Warns Stimulus ‘Sugar High’ Won’t Stem Unemployment" - World Bank President Robert Zoellick.

Question is whether US Dollar will remain the world’s main currency “for a long time” as he says !!

Zoellick Warns Stimulus ‘Sugar High’ Won’t Stem Unemployment - Bloomberg.com

Source: bloomberg.com

World Bank President [bn:PRSN=1] Robert Zoellick [] warned policy makers that fiscal-stimulus plans are insufficient to turn around the “real economy” and rising joblessness threatens to set off political unrest across the globe.