South's unification minister resigns as Korean tensions rise

Kim Yeon-chul, whom Moon appointed as unification minister in April last year as talks between the Trump administration and Pyongyang began falling apart, leaves the job without having a single meeting with the North Koreans. He said he wanted to resign to take responsibility for tensions between the rivals.

The North in recent months has virtually cut off all cooperation with the South while expressing frustration over Seoul's unwillingness to break away from ally Washington and restart inter-Korean economic projects held back by U.S.-led sanctions over its nuclear weapons program.

Kim offered to resign after North Korea in a made-for-TV demonstration Tuesday used explosives to destroy the building in its border town of Kaesong.

The North has also declared it will cut off all government and military communication channels and abandon a key military agreement reached in 2018 to reduce conventional threats, which experts say elevates risks of skirmishes in border areas in land and sea.

It isn't immediately clear who Moon is considering as Kim's replacement. There are calls that Moon should overhaul his foreign policy and national security personnel amid deteriorating relations with the North and Seoul's fading role as mediator in the nuclear talks between Washington and Pyongyang, which have faltered over disagreements in exchanging sanctions relief and disarmament steps.

Moon's government had been credited for coordinating a diplomatic push to defuse the nuclear standoff with North Korea, with his envoys shuttling between Pyongyang and Washington to help set up the first meeting between the North's leader Kim Jong Un and President Donald Trump in in Singapore in June 2018.

But there's criticism that South Korean officials had been too optimistic about the signs they were seeing from Pyongyang and ran into credibility problems once it became clear Kim had no intent to voluntarily deal away the nukes he likely sees as his strongest guarantee of survival. (AP)