South Korea facing 'grave' North Korea test
South Korea's President-elect Park Geun-hye has spoken of a "grave" security challenge from North Korea, following her victory in Wednesday's election.
Ms Park, the ruling Saenuri Party candidate, defeated her liberal rival Moon Jae-in in Wednesday's election.
Speaking after a visit to honour late leaders, she pledged again to "open a new era" on the Korean Peninsula.
Lucy Williamson reports.