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There may have been some warrant for Roosevelt's suspicions, but he was more aware than his son of the ambiguities of the Grand Alliance.

True there had been a couple of years of uncertainty after the dotcom crash.

All this uncertainty is adding up to an environment where the euro is expected to face continued downward pressure.

But if figures are well below expectations, "it creates more uncertainty about how deep the recession is going to be, " he said.

For the narrowly defined interests of the market, such an attack would be very bad news, casting great uncertainty over the supply of oil.

Being open about uncertainty is not just a case of reporting some kind of statistically-derived "margin of error" .

Because if you give people confidence right now that it's going to be extended you take out a bunch of uncertainty.

A number of mining companies share value has gone down in the past few days with the uncertainty from the flooding.

He said the credit squeeze was a "serious crisis" that was still unfolding with a high degree of uncertainty.