UPDATE 2-Trump discusses N.Korea with South's Moon, asks what a 3rd Kim summit would yield

By Steve Holland and Joyce Lee

(Adds summit readouts)

By Steve Holland and Joyce Lee

NEW YORK/SEOUL, Sept 23 (Reuters) - U.S. President Donald Trump and his South Korean counterpart held a summit in New York on Monday to discuss plans to restart U.S.-North Korea talks, as the allies hold discussions in Seoul on sharing the cost of American soldiers stationed in South Korea.

Though negotiations with North Korea have stalled since a failed second summit between Trump and its leader Kim Jong Un in February, the North has said it is willing to restart working-level talks in late September. However, no date or location have been set.

Trump and South Korean President Moon Jae-in discussed ways to achieve practical results in the U.S.-North Korea working-level talks, South Korea's presidential office said, while Trump expressed his confidence that Kim will fulfill commitments made during the two summits, a White House statement said.

"There's been no nuclear testing at all," Trump told reporters as he met Moon on the sidelines of the U.N. General Assembly.

"And the relationships have been very good. ... We want to see if we can do something. If we can, that'll be great. And if we can't, that's fine, we'll see what happens."

Moon said he hopes working-level negotiations between the United States and North Korea will be held soon to prepare for a third summit, but Trump said he would want to know what would result from a third summit with Kim before agreeing to hold it.

"Right now, people would like to see that happen. I want to know what's going to be coming out of it. We can know a lot before the summit takes place," Trump said.

During their meeting, Trump and Moon reaffirmed their previous pledge not to use force against North Korea, and if North Korea denuclearizes, to provide a bright future for the country, a senior official at South Korea's presidential Blue House said.

However, there was no mention of a "new method" of approach on North Korea's denuclearization during their meeting, while they talked about how sanctions must be maintained, the senior official said.


MILITARY COSTS

North Korea's chief nuclear negotiator, Kim Myong Gil, last week welcomed Trump's suggestion for a "new method" in talks on Pyongyang's nuclear weapons programs, saying he wanted to be "optimistic" the United States would present the "right calculation method".

Last week, Trump distanced himself from a suggestion by his former national security adviser, John Bolton, for a Libyan model of denuclearization for North Korea, saying it "set us back very badly". Bolton was fired this month, with Trump naming Robert O'Brien as new national security adviser.

Before his sit-down with Moon, Trump said the two would discuss North Korea's repeated launches of short-range missiles in recent weeks.

"We didn't have an agreement on short-range missiles. And a lot of people and a lot of countries test short-range missiles," Trump added. "There's nothing spectacular about that."

Meanwhile, talks on renewing a military cost-sharing deal with the United States will begin on Tuesday in Seoul, South Korea's foreign ministry has said.

Trump and Moon talked about how a quick conclusion of a new military burden sharing agreement before the end of 2019 will be a way to further strengthen their alliance, the White House said in a statement.

South Korea has shouldered part of the cost of stationing what is now about 28,500 U.S. troops in the country since a 1991 pact. In March, it signed a deal with the United States to pay 1.04 trillion won ($870.94 million) this year - an increase of 8.2% on the year.

The agreement expires at the end of this year.

Trump has repeatedly urged the South to contribute more to the cost. "Talks have begun to further increase payments to the United States", he wrote last month on Twitter, adding, "South Korea is a very wealthy nation".

Moon detailed South Korea's contribution to the stationing of U.S. troops in Korea, including increasing purchases of U.S. weapons, future purchase plans, as well as a steady increase in South Korea's share of costs, the senior Blue House official said. ($1=1,194.1100 won) (Reporting By Steve Holland and Joyce Lee Editing by Chris Reese, Clarence Fernandez, Jonathan Oatis and Lincoln Feast.)