New Delhi, Aug. 21 -- North Korean leader Kim Jong Un 's powerful sister yet again taunted South Korean efforts to improve ties, state media reported Wednesday, saying that her country will never accept Seoul as a diplomatic partner.

Kim Yo Jong's remarks fit a longstanding pattern of aggressive language during ongoing South Korea-U.S. military drills, which the North has long denounced as invasion rehearsals, but also reflect a shift in Pyongyang's approach to its rival.

Her brother has shifted his focus to Moscow, and last year declared that North Korea was abandoning long-standing goals of a peaceful unification with South Korea. He ordered the constitution rewritten to declare the South a permanent enemy.

Kim Yo Jong spurns feelers...