In a statement carried by state media, Kim Yo Jong said she doesn’t deny the personal relationship between her brother and Trump “is not bad.” But she said if their personal relations are to serve the purpose of North Korea’s denuclearization, North Korea would view it as “nothing but a mockery.”

North Korea said relations between its leader Kim Jong Un and US President Donald Trump are “not bad” but any attempt to resume dialogue between the two countries should start from recognizing the North as a nuclear power.

South Korea is studying various plans to improve relations with North Korea, a spokesperson for South Korea's Unification Ministry said on Monday, in response to a media report that Seoul is considering allowing individual tours to North Korea.