UN Secretary General Ban Ki-Moon warned North Korea that a further nuclear test would be a "provocative measure." In a news conference in the Hague, he said:
The DPRK cannot go on like this, confronting and challenging the authority of the Security Council and directly challenging the whole international community.
He also said he was aware of possible preparations for a nuclear test, but had no specific information.
Through her tears, a North Korean woman told me how she had to escape: risk death while running across the border or die of starvation.
Memories of the Korean war are never far away in South Korea, where residents have grown used to living with the constant threat of war.
North Korea said it will withdraw workers from the Kaesong factory park run jointly with South Korea and suspend all operations there.