UNITED STATES – GREENLAND

It is said that Donald Trump’s much-vaunted desire to acquire Greenland is all about US national security.

First, the US president claimed the Arctic island, a self-governing territory of the Kingdom of Denmark, was being swarmed by Russian and Chinese vessels. Then he said ownership of the sprawling territory was vital for his planned “Golden Dome” missile defence shield.

There are hints of truth in both claims, but security experts have broadly argued that a US acquisition of Greenland is not necessary to address the national security concerns.

The sparsely populated island plays an outsized role in the United States’ and NATO’s wider air defence architecture. It sits smack bang in the middle of the shortest flight path between Moscow and Washington – known as the great-circle distance.

Technically, the island is 2,000 miles from Washington and 2,000 miles from Moscow.

Since the end of the Second World War, the US has had military personnel stationed at Pituffik Space Base, on the far north coast of Greenland. It serves as the US military’s northernmost base, about 900 miles from the North Pole and is home to about 150 troops. It is a key cog in Washington’s early warning system for missiles. If Russia or China were to fire a ballistic missile at the US, its path would probably cross directly over Greenland, which is why the primary role of the personnel at Pituffik is to scan the skies for incoming aerial threats.

However, America’s military footprint on Greenland has significantly dwindled since the end of the Cold War.

At its peak, Washington had 17 installations and 15,000 soldiers on the island, hunting for Soviet submarines and ships, as well as being ready for a feared invasion.

This was underpinned by a 1951 agreement signed between the US and Danish governments. Copenhagen has repeatedly argued this deal still stands, and there is nothing preventing Mr Trump from deploying more soldiers to Greenland without the need to acquire the island.

This includes hosting any assets that would contribute to the US’s Golden Dome project – a $175bn (£131bn) air defence system that would mimic Israel’s Iron Dome, but on a vastly larger scale. Mr Trump had not mentioned Greenland, however, as being vital to this decade-long project until just recently – suggesting it has become a convenient excuse for the White House to use.

The Golden Dome project, it has been claimed, would also involve a system of satellites – some that track missiles and others that fire their own projectiles to shoot them down.

While analysts have questioned whether such technology even exists, or is likely to exist any time soon, US ownership of Greenland would not be a prerequisite for an American satellite defence system.

In real terms, Pituffik’s importance is expected to grow as climate change reshapes the polar Arctic by opening up new trade routes close to North America.

Greenland sits where the Arctic Ocean meets the Atlantic.

Russian ships and submarines leaving the country’s Arctic region bases to head south have to pass nearby to do so. One of the main routes sees the Russian vessels pass through the waters between Greenland, Iceland, and the UK – known as the GIUK Gap.

A second gap, the Bear Gap, between Norway and Iceland has also emerged as a favoured option.

Since Vladimir Putin ordered his invasion of Ukraine, NATO has increased its aerial and naval patrols in the area. Denmark says it will invest £1.73bn to bolster its Arctic Command with new ships, drones, and surveillance aircraft to guard the region. The spending was announced in January last year to deter Mr Trump’s interest in Greenland.

Again, as with missile defence, bolstering security in the waters around Greenland does not require acquisition of the island.

Denmark insists Washington could use existing treaties to address those national security concerns.

Greenland’s geography might provide the easiest route to explaining Mr Trump’s desire to acquire the territory. The island’s capital is closer to Washington than it is Copenhagen.

But it could be down to the maps drawn by Gerardus Mercator in the 16th century, and still commonly used.

On the Mercator Map, areas near the poles are greatly exaggerated in size.

Greenland can appear to be the same size of Africa, despite being 14-times smaller. South America also appears smaller than the Arctic island.

Mr Trump has publicly spoken of his love of maps, and for the size of perceived regional superpowers, such as the US or Russia. To some, the Mercator Distortion could just make a combined US-Greenland landmass look bigger than Russia.