World Bank chief warns of economic 'danger zone'

"The financial crisis in Europe has become a sovereign debt crisis, with serious implications for the monetary union, banks, and competitiveness of some countries," he said at a conference in Beijing on the future of China.

"The United States must address the issues of debt, spending, tax reform to boost private sector growth and a stalled trade policy," he added, warning starkly: "The world economy is entering a new danger zone this autumn."

The World Bank chief also urged Beijing to accelerate its structural reforms as it seeks to develop from an export-driven economy towards a growth model more reliant on domestic consumption.

"China's structural challenges occur in a current international context of slowing growth and weakening confidence," he warned, adding that China would face further challenges in the years ahead.

"In the next 15 to 20 years, China is well-positioned to join the ranks of the world's high income countries," he said, warning: "That's a transition that only a handful of countries have made -- and, sadly, many have failed".

The World Bank in July reclassified China as an upper middle income economy, putting it in a group of nations that he said needed to move on from the growth models they relied on while they were poor.

"They can be squeezed on both ends: by competition from low-income, low-wage economies, as well as by competition from upper-income countries through innovation and technological change," he said.

He urged Beijing to address the issue, saying "China's policymakers know what needs to be done".

Beijing routinely comes under pressure from Europe and the United States to revalue its currency, which they say is kept artificially weak to favour Chinese exports, and to allow more access to the world's number two economy.

China's monetary policy and intellectual property rights have also been at the root of persistent frictions between the trading partners.

"Decisions in Europe, decisions in the United States, decisions in China -- they affect us all," added Zoellick, who is in China until Monday.