Foreign Secretary William Hague has said Britain must "keep calm" as he played down fears of an escalation of violence from a "provocative" North Korea, while confirming embassy officials will not be leaving Pyongyang.
Mr Hague told Daybreak "we should be worried that North Korea is developing nuclear weapons (and) missiles" but said, as a country, we must remain "firm, united and calm" in the face of the growing war "rhetoric".
"North Korea wants to show that it is a victim and to create a sense of crisis, so we shouldn't play to that all of the time," he said.
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.