South Korea remains “the enemy” of North Korea despite recent moves by Seoul to ease tensions along the 38th parallel, the powerful sister of North Korean leader Kim Jong Un said in state media Monday.

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.”