N. Korea Urges South to Accept Kim Jong-Un Talks Offer

North Korea urged South Korea on Friday to accept leader Kim Jong-Un's proposal for military talks and to ease tensions that surged after the North's fourth nuclear test in January.

Kim had offered the military dialogue during a marathon speech to the recently concluded congress of North Korea's ruling Workers' Party -- the first event of its kind for more than 35 years.

In an "open letter" published Friday by the official KCNA news agency, the North's National Defense Commission said urgent steps were needed to overcome the current "catastrophic state" of inter-Korean ties.

"South Korea must actively respond to our proposal to hold military talks," the letter said, adding that peace could not be achieved at "gunpoint".

"We are proposing to put all issues of interest on the table to openly discuss and resolve them," it said.

But Seoul rebuffed the offer Friday, after earlier dismissing Kim's original proposal as posturing.

"We cannot see it as a sincere gesture," a defense ministry official said Friday after the letter was published.

The South had earlier said most of Kim's speech to the party congress had been devoted to talking up his nuclear weapons program.

The "open letter" format reflects the complete absence of direct communication between the two countries after the North announced in February it was cutting the last two remaining hotlines with the South.

The hotlines themselves were never used for conversational diplomacy, but were key to setting up meetings where such discussions could take place.

The letter also demanded that Seoul halt all "hostile actions" such as loudspeaker propaganda broadcasts, and prevent activists floating anti-North leaflets over the border by balloon.

After the January 6 nuclear test, the South began blasting a mix of news, propaganda messages and Korean pop music across the border using giant banks of loudspeakers.

"South Korea must clearly recognize that only dialogue and negotiation will lead to progress in North-South relations," the commission said.

Seoul insists it will only consider engaging in substantive dialogue with Pyongyang if the regime takes a tangible step towards denuclearization.

The North has repeatedly said its nuclear arsenal is not up for negotiation.