A South Korean protester wearing a mask of North Korean leader Kim Jong Un attends a rally against possible nuclear test from North Korea in Seoul, South Korea, Thursday, Jan. 31, 2013. Kim convened top security and foreign affairs officials and ordered them to take "substantial and high-profile important state measures," state media said last Sunday, indicating that he plans to push forward with a threat to explode a nuclear device in defiance of the United Nations.(AP Photo/Ahn Young-joon)