Dollar Peg Nearing End In Argentina
Argentina's decade-long defense of fixed parity between its peso and US dollar appears to collapse, as country's new president, Eduardo Duhalde, signals that Argentina will soon officially devalue peso and as central bank stops requiring nation's banks to honor one-for-one exchange rate; Duhalde hopes to make Argentine goods more competitive abroad and end three-year recession; for borrowers, central bank's action effectively devalues peso by as much as 40 percent (M)