Sweden is happy to help with problems on the Korean peninsula but it is up to the parties involved to try to find a way forward, Foreign Minister Margot Wallstrom said on Friday.

She spoke a day after North Korea's foreign minister Ri Yong Ho landed in Sweden for talks, prompting speculation that the visit could lay the groundwork for a possible meeting between US President Donald Trump and North Korean leader Kim Jong Un.

A Swedish Foreign Ministry spokesman said Ri was in Stockholm to discuss the security situation on the Korean peninsula and Sweden's diplomatic representation of the United States in North Korea.

Sweden, which is not a member of the US-led NATO military alliance, has been mentioned as a potential location for a possible face-to-face meeting between US President Donald Trump and North Korea's leader Kim Jong Un.

The country acts as diplomatic representative in North Korea for the United States, which has no embassy there, and has helped with the release of US citizens held by the reclusive state.

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