Kim Jong Un 'must disappear soon' as war of words escalates between North and South Korea
South Korea has continued an escalating rhetorical battle on the Korean Peninsula, with an official saying rival North Korea "must disappear soon".
South Korean defence ministry spokesman Kim Min-seok also said that North Korea is not a real country and exists for the benefit of only one person, a reference to dictator Kim Jong Un.
He said the North has no human rights or public freedoms.
The comments followed a series of sexist and racist slurs by North Korea against the leaders of South Korea and the United States.
Pyongyang's state media likened South Korean president Park Geun-hye to an "old prostitute" and US president Barack Obama to a "monkey" in recent dispatches.
Pyongyang's rhetoric intensified after Mr Obama and Ms Park met in Seoul last month.