South Korean marines attend the 2nd anniversary commemorative ceremony of artillery shelling on Yeonpyeong island, Seoul, North Korea, November 23, 2012.

South Korean soldiers wave national flags during the 2nd anniversary commemorative ceremony of the attack on Yeonpyeong island, Seoul, South Korea, November 23, 2012.

North Korean defectors participate in a rally to mark the the second anniversary of North Korea’s artillery attack on the Yeonpyeong island, Seoul, South Korea, November 23, 2012.

A woman wipes her tears during the 2nd anniversary commemorative ceremony of the attack on Yeonpyeong island, Seoul, South Korea, November 23, 2012.

South Korean protesters burn a portrait of North Korean leader Kim Jong Un during a rally to mark the second anniversary of North Korea’s artillery attack on the Yeonpyeong island, Seoul, South Korea, November 23, 2012.