LAWSON SAYS U.S.-WEST GERMAN ROW WAS UNNECESSARY U.K. Chancellor of the Exchequer Nigel Lawson said the recent dispute between the United States and West Germany over economic policy was responsible for much financial turmoil and that it should never have happened. He said in a television interview the dispute had fanned fears of a breakdown in the cooperation which is so important between finance ministers of the major nations. He said the dispute was a row which should not have happened and agreed that much of the blame lay with U.S. Treasury Secretary James Baker who had publicly criticised West Germany for having raised its key interest rates.