The United Nations has cautioned against a premature withdrawal of the massive stimulus measures taken by governments globally since late 2008.Director of Development Policy and Analysis from the UN's Department of Economic and Social Affairs Rob Vos said, the stimulus have led to the rebound in the world economy. He said, most of the global demand is currently being held up by expansionary fiscal policies, and if it will be withdrawn, it can lead to worldwide recession.In a preview of the annual economic forecast, the UN said China and India growing at more than 6 per cent will lead the world economic recovery next year but warned that the bounce-back would remain fragile. He said, the world economy will experience a modest recovery of 2.4 per cent in 2010 after the world gross product has declined by 2.2 per cent in 2009.