North Korea on Thursday expelled South Koreans from a joint factory park north of the border in retaliation for the new government's tough tone towards Pyongyang, a move Seoul warned could chill once warming

ties.

The predawn expulsion of the officials at the Kaesong industrial site, once hailed as a model of economic cooperation, is one of the most aggressive moves in years by the destitute North against its wealthy neighbour that supplies it with aid. (Reuters)