London Guardian 
Wednesday, May 26th, 2010
North Korea threatened to halt all border traffic with its southern neighbour today as Hillary Clinton arrived in Seoul to discuss the growing crisis in the region.
Relations are at their lowest point for over a decade after the south announced it would slash trade, bar northern ships from its waters and resume psychological warfare after a six-year hiatus. It said it was punishing the north for sinking a southern warship with a torpedo.
North Korea, which denies any involvement in the disaster, hit back by announcing it would sever relations with the south until President Lee Myung-bak leaves office.
Today it cut off some cross-border communication links and expelled eight South Korean government officials from the joint industrial zone at Kaesong, Seoul’s unification ministry said.