(2nd LD) Fitch maintains S. Korea's rating at 'AA-' with stable outlook
(ATTN: UPDATES with response from the finance ministry in last 2 paras) By Kim Han-joo SEOUL, Feb. 6 (Yonhap) -- Global credit appraiser Fitch Ratings said Thursday it has reaffirmed South Korea's sovereign rating at "AA-" with a stable …