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At 0843 GMT, the lira firmed to 2.98 against the dollar, from 3.0020 before the announcement, when it was near its weakest since Jan. 28.
The BIST 100 main share index rose 1.65 percent to 78,039.24, outperforming the MSCI index of emerging market stocks, which was down 0.45 percent. The benchmark 10-year government bond yield fell to 10.16 percent from 10.40 percent at Monday's close.