HONG KONG (Standard&Poor's) July 31, 2013--Standard&Poor's Ratings Services today said it has assigned its 'A+' long-term debt rating to Korea National Oil Corp.'s (KNOC; foreign currency A+/Stable/--; local currency AA-/Stable/--) Swiss Franc (CHF)-denominated 240 million senior unsecured bonds. The bonds have a coupon rate of 1.625%, are due Nov. 29, 2018, and are drawn from its $8 billion global medium-term note program. The stable outlook on our ratings on KNOC reflects the outlook on our sovereign ratings on Korea because we equalize the ratings on both owing to our expectation that there is an almost certain likelihood of the government of Korea providing KNOC with extraordinary support if it suffered financial distress. Equalization of the ratings