The cost of insuring South Korea\'s sovereign debt against default climbed the most in 32 months in September, growing two times faster than that of eurozone countries, data showed Friday. The credit default swap (CDS) premium on South Korea\'s foreign currency bonds with five-year maturities reached 220 basis points as of the end of September, up 92 basis points from a month earlier, according to the data by the Korea Center for International Finance.