New York University professor Nouriel Roubini has said a "perfect storm" of fiscal woe in the US, a slowdown in China, European debt restructuring and stagnation in Japan may converge on the global economy, Bloomberg has reported. There's a one-in-three chance the factors will combine to stunt growth from 2013, Roubini said. "There are already elements of fragility," he said. "Everybody's kicking the can down the road of too much public and private debt. The can is becoming heavier and heavier, and bigger on debt, and all these problems may come to a head by 2013 at the latest."