The New Nation - Internet Edition

AFP, Seoul

North Korea announced Thursday it was suspending all dialogue with South Korea after failing to win an apology for remarks by a Seoul general, its toughest action in a week of growing cross-border tensions.

The communist state's Korean Central News Agency (KCNA) blamed Seoul for the North's decision to suspend dialogue and contacts and to block border crossings by Seoul military and civilian officials.

"Our military does not engage in empty talk," it said, disregarding an appeal from South Korean President Lee Myung-Bak for "straightforward" talking to calm the atmosphere.

KCNA was disclosing the contents of a message delivered earlier to Seoul by the North's chief delegate to inter-Korean military talks, Lieutenant General Kim Yong-Chol.

Kim had demanded an apology for remarks last week by South Korea's new chairman of the Joint Chiefs of Staff (JCS), General Kim Tae-Young. It interpreted these as authorising a preemptive military strike.

Seoul's defence ministry on Wednesday rejected the demand. It said the North was twisting the JCS chief's remarks and urged it to stop raising tensions.

The North Thursday dismissed that message as "excuses" and said its military would take immediate countermeasures. "The South's military authoritiest will never avoid responsibility for suspending all North-South dialogue and blocking the (border) passage," KCNA said.

Seoul's defence ministry said it would make no further response. Lee Myung-Bak, a conservative who took office February 25, has angered the North by adopting a tougher line on relations after a decade-long "sunshine" engagement policy under liberal presidents.

He says he will link economic aid to the North's progress in nuclear disarmament and raise its widely-criticised human rights policy.

"Since my inauguration, North Korea has intensified tension. But I think relations will not worsen," Lee said earlier Thursday, in his first comments since Pyongyang this week labelled him a traitor and US sycophant.

"What the new government wants is a more straightforward dialogue between South and North Korea t we want North Korea to open its mind for sincere dialogue."

The flare-up began March 27, when the North expelled South Korean officials from a joint industrial complex. The next day, it test-fired missiles and accused Seoul of breaching the sea border.