"We will not disclose what they talked about", PM Stefan Lofven's spokesman Jonatan Holst told AFP.
Trump responded with a surprise announcement that he was willing to meet Kim in a bid to resolve the crisis over North Korea's development of nuclear missiles capable of hitting the United States.
The minister, however, said that Moscow openly told Tokyo that the deployment of the Asian segment of the United States global missile defense in Japan and South Korea had a direct effect on Russia's national security. Its diplomatic mission in Pyongyang, which opened in 1975, was the first Western embassy established in the country. "We are a country that is militarily non-aligned and have a longstanding presence in North Korea", he said.
"We believe in dialogue and in a political process", Wallstrom told reporters.
Ri made no comment as he left.More news: Israel Condemns Poisoning of Russian Spy, Without Mentioning Russia
Ivanka Trump met with South Korea's foreign minister Kang Kyung-wha in Washington Friday? But we're not naive, we don't think we can solve the world's problems. He was expected to meet again with Wallstrom on Friday.
A White House statement said Trump and Moon discussed preparations for their upcoming engagements with Pyongyang and agreed that "concrete actions", not words, were the key to denuclearization of the Korean peninsula.
Ri arrived at the Swedish Foreign Ministry on Thursday night, reports CNN.
South Korea diplomats said North Korea has agreed to discuss "denuclearization" at the talks, planned for May, though the hermit kingdom has long demanded a removal of US troops in its southern neighbor in exchange. -North Korea summit would be a good confidence-building measure.
Worldwide media have speculated that Sweden could either help set up a summit or be a potential location if a tete-a-tete were to be confirmed.More news: Sierra Leone Elections: Maada Bio, Kamara for run-off March 27
Sweden's foreign ministry has refused to comment on that possibility saying only that the talks would "focus on Sweden's consular responsibilities as a protecting power for the United States, Canada and Australia".
The National Security Council has assembled a working group, composed of officials from several agencies, to strategize before the meeting.
Mr Suh was one of two South Korean envoys who visited the White House last week to brief Mr Trump on their meeting with Kim Jong Un in Pyongyang a few days earlier.
The meeting is planned for some time by May, but no time or place has yet been agreed.
Speaking in Berlin on Friday, Lofven said that if Sweden "can serve as a facilitator to bring about results, then we will of course do that".More news: Colts Trade Down in Draft, Give up Number Three Pick
Skoog added, however, the talks in Stockholm would "hopefully" help "create a good environment for such a meeting" and declined to comment when asked if Sweden would host a meeting of the USA and North Korean leaders.
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