South Korea has held talks with China, Russia, and Japan to discuss a common response to North Korea’s planned rocket launch.

DigitalGlobe analysis showed North Korean preparations at the end of November (Photo: dw.de)

Seoul's top nuclear envoy Lim Sung Nam left Tuesday to discuss with the US how to maximize diplomatic efforts and coordination to block North Korea's launch. South Korea says if North Korea persists with its missile plan, the United Nations will convene the Security Council to discuss a suitable response.