...SINGAPORE (S&P Global Ratings) Sept. 13, 2018--S&P Global Ratings today said it has assigned its '##' long-term issue rating to the proposed benchmark-size U.S. dollar-denominated dual tranche notes by the Republic of Korea (##/Stable/A-1+). The notes consist of 10-year and 30-year tranches. The notes will constitute the direct, unconditional, unsubordinated, and unsecured obligations of Korea. Our ratings on Korea reflect the country's favorable policy environment, sound fiscal position, and net external creditor position. We believe Korea's high-income economy continues to demonstrate stronger growth prospects than most developed countries'. Significant security risks and contingent fiscal liabilities partly offset these strengths. The stable outlook on the sovereign ratings reflects our expectation that geopolitical risks in the Korean peninsula will not escalate over the next two years beyond what we have seen since the leadership change in North Korea in 2011. Beyond the outlook horizon,...