Growing confidence that the global economy is on the road to recovery briefly sent oil prices to their highest levels of the year yesterday.
Meanwhile, borrowing costs in a key part of the money markets reached record lows as the three-month dollar Libor rate fell below 1 per cent.
Caution returned to equity markets, however, as Ben Bernanke, chairman of the US Federal Reserve, gave his first hints about the future of the US banking sector ahead of the results of tomorrow's stress tests.
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