Self-governing island stresses it is member of Nato, which is looking at improving Arctic defences, through Denmark

Greenland’s government has said it “cannot under any circumstances accept” Donald Trump’s desire to take control of Greenland, as Nato’s secretary general, Mark Rutte, said the organisation was working on ways to bolster Arctic security.

At the start of a critical week for the vast Arctic island, a largely self-governing part of Denmark, the US president restated his interest in the strategically located, mineral-rich territory, saying the US would take it “one way or the other”.