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.

North Korea ruled out a role for South Korea in any regional diplomatic talks related to Pyongyang and warned of “countermeasures” against “the most hostile state” as it criticized the ongoing military cooperation between Seoul and Washington.

Captured during the Korean War and imprisoned for decades for refusing to renounce his communist beliefs, 95-year-old Ahn Hak-sop now has a single dying wish: to return to North Korea and be buried alongside his comrades.