Welcome back. World leaders are facing serious differences over how to restore healthy economic growth as the G-8 and G-20 summits get under way outside Toronto. The leaders of the rich and emerging economies joined forces at the height of the global financial panic and controversially poured an estimated 4-point-2 Trillion Euros into stimulus spending, emergency bank loans and bank guarantees. Some countries are enjoying at least modest growth, among them, summit host, Canada. But its not thanks to bailouts - but to tight regulatory and fiscal policy.