The territory and the European bloc are trying to see off the US president, who has said control of Greenland is essential to national security

The Trump administration has said repeatedly that the US needs to gain control of Greenland, justifying its claim from “the standpoint of national security” and warning that it will “do something” about the territory “whether they like it or not”.

This puts the EU and Nato in a difficult spot. Greenland, a largely self-governing part of Denmark, is not a member of the bloc but Denmark is; while the Arctic island is covered by the defence alliance’s guarantees through Denmark’s membership.

European leaders have strongly defended sovereignty, territorial integrity and the right of Greenland and Denmark to decide on matters concerning them, but there is as yet no clear strategy on how to deter Trump – or respond if he does make a move.

Here are some of the options.