South Korea agreed on Thursday to a North Korean offer of high-level military talks, a major breakthrough in the crisis on the peninsula that improves the prospect of renewed aid-for-disarmament negotiations.

Meanwhile, US President Barack Obama warned that unless China steps up pressure on North Korea, Washington would redeploy its forces in Asia to protect itself from a potential North Korean strike on US soil, the New York Times reported on Friday.

NORTH-SOUTH MEETING

Hours Obama and Chinese President Hu Jintao, meeting in Washington, jointly expressed concern about North Korea's nuclear program, Pyongyang bowed to Seoul's demands for talks about two deadly attacks last year.

Washington and Beijing have argued that North-South dialogue is a prerequisite to a resumption of six-party talks involving the two Koreas, the United States, China, Japan and Russia.

In 2009, Pyongyang walked out of the aid-for-disarmament talks, under which it previously agreed to abandon its nuclear programs, pronouncing them dead.

While Washington welcomed the possibility of North-South military talks, it made clear Pyongyang must take significant, if unspecified, actions before six-party talks could resume.

CHINA MUST PRESSURE NORTH KOREA

Meanwhile, a senior US administration official was quoted as saying that Obama's warning against China, first made in a phone call to Chinese President Hu Jintao last month, was repeated over a private dinner at the White House on Tuesday.

The official said the warning persuaded China -- North Korea's only major ally -- to take a harder line toward Pyongyang, which opened the door to a resumption of dialogue between North and South Korea.

MEETING TO DISCUSS NORTH-SOUTH CLASHES

A South Korean defence ministry spokesman said it had not been decided whether the inter-Korean talks would be held at the ministerial level, as suggested by Pyongyang in a dispatch to the South Korean capital.

A unification ministry official said Pyongyang had accepted Seoul's demands to specifically discuss the sinking of its warship Cheonan in March, which killed 46 sailors, and the North's November 23rd attack on an island, which killed four people.

The attacks, along with the North's revelations of advances in a uranium enrichment program that opened a second route to making a nuclear bomb along with its plutonium work, pushed tensions on the peninsula to their highest level in years.

"The government also plans to propose high-ranking talks on denuclearization," the defence ministry spokesman said, adding Seoul had agreed to the North's proposal for preliminary talks to prepare for the high-level talks.

As part of its demands for inter-Korean dialogue, Seoul said North Korea must show sincerity on denuclearization, as agreed under a 2005 deal.

North Korea has used its nuclear program to gain leverage in talks over the past two decades that produced two deals meant to compensate Pyongyang with economic aid for ending it.

SUMMIT PRESSURE

Pyongyang has been seeking talks since the start of the year, but Seoul had rejected Pyongyang's overtures as insincere propaganda, saying the North was trying only to win aid.

US Defense Secretary Robert Gates last week held out the possibility of a resumption of six-party talks if North Korea ceased provocations and met its obligations.

While welcoming the plans for North-South military talks, US State Department spokesman Mark Toner said the US wanted to see concrete action from North Korea before resuming six-party talks.

"We view it as a positive sign," Toner told reporters. "It's something that helps ease tensions in the region. We still believe that North Korea has a ways to go before we can engage in meaningful six-party talks."

Last week a senior US official gave the most explicit list to date of what Washington wants from Pyongyang to resume the wider talks: the return of international nuclear inspectors to the North and a halt to its nuclear and missile tests.

Moon Hong-sik of the South's Institute for National Security Strategy said Wednesday's Hu-Obama summit may have pushed the North into submitting to Seoul's demands.

"North Korea understands that it must have North-South dialogue first before it can resume six-party talks," he said. "But there is still a long way to go, because it still has to prove its sincerity and apologize for last year's provocations."

A joint statement issued by Obama and Hu at their summit agreed on the importance of denuclearization of the Korean peninsula and on the need to implement agreements reached earlier by six-party talks on North Korea's programs.

The United States and its allies South Korea and Japan have been pressing China, North Korea's economic and diplomatic backer, to do more to rein in Pyongyang's behavior and to nudge the North back to six-party talks.

Source: Reuters