She also said South Korea was at "crisis level", following the recent underground test by North Korea of a nuclear device and its launch of a three-stage rocket, both of which were seen as a breach of UN resolutions and condemned as a threat to stability in the region.

BBC: South Korea's President Park warns over deadlock

North Korea's third nuclear test followed an apparently successful launch in December of a three-stage rocket, seen as a banned test of missile technology.

BBC: South Korea warns North on armistice threat

North Korea's nuclear test - its third - followed its apparently successful launch of a three-stage rocket to put a satellite into orbit in December.

BBC: Park Geun-hye sworn in as South Korea president