Oil climbs to three-week high as dollar, yields dip

By Nigel Stephenson LONDON (Reuters) - Oil prices rose to three-week highs on Monday, supported by a weak dollar and helping to nudge a gauge of inflation expectations in the euro zone to its highest since January. Oil and gas and other commodity-related shares rose, lifting European stock markets after slight falls in Asia. Brent crude oil, the international benchmark, rose as high as $47.94 a barrel , its highest since Nov. 1 and up some 2 percent on the day, on signs that OPEC was moving clos