S-400 technology helps Seoul blunt Pyongyang threat

Advanced missile technology that went into Russia's deadly S-400 Triumf missile defense system is powering the South Korean ballistic and air defense missile programs. Partly in response to North Korea's deployment of nuclear missiles and submarines, Seoul has beefed up its armaments industry with generous doses of Russian technology. Among the most critical projects are a submarine-launched ballistic missile and the M-SAM Cheolmae-2 medium- to long-range surface-to-air missile.

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