US President Donald Trump suggested he could punish countries with tariffs if they do not support US control of Greenland, a message that came as a congressional delegation met with Danish and Greenlandic lawmakers in Copenhagen and sought to ease tensions.

Trump has for months insisted that the US should control Greenland, a semi-autonomous territory of NATO ally Denmark, and said earlier this week that anything less than the Arctic island in US hands would be "unacceptable."

"Tariffs could be imposed on countries if they don't agree with Greenland," he said without giving details.

"We need Greenland for national security," Trump added.

He had not previously mentioned using tariffs to try to resolve the issue.

Earlier this week, the foreign ministers of Denmark and Greenland met in Washington this week with US Vice President JD Vance and Secretary of State Marco Rubio.

That meeting did not resolve the deep differences, but produced an agreement to set up a working group - the purpose of which was that Denmark and the White House then offered radically different public views. /Telegraph/

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