US special representative for policy on the Democratic People's Republic of Korea (DPRK) Glyn Davies (L) talks to his South Korean counterpart Cho Tae-yong at the Ministry of Foreign Affairs in Seoul, South Korea, Sept. 10, 2013. Glyn Davies arrived in South Korea Monday to discuss policy toward Pyongyang. (Xinhua/Park Jin-hee)

US special representative for policy on the Democratic People's Republic of Korea (DPRK) Glyn Davies arrives at the Ministry of Foreign Affairs in Seoul, South Korea, Sept. 10, 2013. Glyn Davies arrived in South Korea Monday to discuss policy toward Pyongyang. (Xinhua/Park Jin-hee)

US special representative for policy on the Democratic People's Republic of Korea (DPRK) Glyn Davies (R) talks to media after meeting with his South Korean counterpart Cho Tae-yong (L) at the Ministry of Foreign Affairs in Seoul, South Korea, Sept. 10, 2013. Glyn Davies arrived in South Korea Monday to discuss policy toward Pyongyang. (Xinhua/Park Jin-hee)