By Daniel Flynn and Marc Jones
Weber also said currencies in many emerging economies remain undervalued and said the United States should save more to curb its reliance on foreign capital.
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"Current account surpluses have returned or are currently returning to pre-crisis levels and I think this will be sped up by the fact that the recent hike in oil prices might accelerate," Weber said.
He was addressing a dozen global policymakers who joined academics and businessmen under the banner of France's Group of 20 presidency to discuss imbalances, regulation, inflation and other topics two weeks after G20 finance ministers fixed a set of indicators to measure imbalances.
The G20 finance ministers of the world's major economies succeeded only in reaching a fudged accord on how to measure imbalances in the global economy after China prevented the use of exchange rates and currency reserves as indicators.
"The G20 is the only group that basically has legitimacy to own this process (of tackling imbalances) and drive forward and achieve results," Weber said.
"We have to start passing a judgment on what the disequilibrium is. We have to embark on mechanisms to deal with these current account problems and come up with a surveillance process to make sure countries that commit to certain processes at the national level see these policies through."
REGULATION, INFLATION HOT TOPICS
Opening Friday's conference, Bank of France Governor and ECB governing council member Christian Noyer noted that the accumulation of foreign reserves by emerging economies was part of the reason behind the globalised crisis.
Friday's gathering came a day after the European Central Bank said it could soon raise interest rates, heightening concerns about the implications for struggling euro zone countries as EU leaders strive to resolve the debt crisis.
Inflation and pressure elsewhere for tighter monetary policy will also to be a key topic at Friday's meeting.
China and other Asian and Latin American economies are resisting pressure from Washington and Europe to raise interest rates to curb signs of overheating in their economies and allow their currencies to appreciate.
Many of them point the finger squarely at the U.S. Federal Reserve's new round of money printing via a $600 billion bond purchase program as the cause behind a wave of "hot money" inflows that risk destabilizing their economies.
China was represented on Friday by deputy central bank governor Hu Xiaolian. It, and other emerging nations, may air that criticism afresh.
(Editing by Mike Peacock)