China's economic down is my biggest fear, says Rogoff

China's economic down is my biggest fear, says Rogoff China's economic down is my biggest fear, says Rogoff Ken Rogoff, former chief economist at the International Monetary Fund, says the world's says the world's economy is slowing much faster than official figures suggest. He tells the 's Kamal Ahmed that China's slowdown is the biggest threat to the global economy. Share this story About sharing Ken Rogoff, former chief economist at the International Monetary Fund, says the world's second largest economy is slowing much faster than official figures suggest. He tells the BBC's Kamal Ahmed that China's slowdown is the biggest threat to the global economy. Share this story About sharing