It's winter in the northern hemisphere, and the weather is reflecting the frosty mood between Donald Trump and some of his key allies.
The US president has made it clear he wants the Arctic island of Greenland to come under his control, but he is being rebuffed by both the autonomous territory and Denmark, a NATO ally that still administers it.
NATO nations, including the UK, France and Spain, have stood behind Greenland, with fears the disagreement could lead to the US leaving the crucial alliance.
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So will Trump make a decisive move to take over Greenland and what would that look like for the NATO alliance, Europe and beyond?
Why does the US want Greenland?
It's easy to wonder why an icy European island with a population of just 56,000 people is so coveted by the mightiest country on earth, but it holds great strategic importance.
Its location between the US and Europe is key, as it sits in a corridor called the GIUK gap, a maritime passage between Greenland, Iceland and the UK.
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It links the Arctic to the Atlantic Ocean, making it a vital shipping route when considering Greenland's natural resources.
The island holds large deposits of oil, gas and rare earth minerals, which are hugely important in a geopolitical context as the US faces a battle to stay on top of China.
They are also critical to the world economy, used in the manufacture of electric cars, wind turbines and military equipment.
Will the US leave NATO over the Greenland dispute?
Trump has threatened to pull out of the NATO alliance before, including at the end of 2024, when he cited low defence spending numbers of several allies.
He has not specifically threatened to leave the 77-year alliance during the latest Greenland dispute, dodging the question when asked by reporters in recent days.
"You don't know what I'm going to do," he said in response to questions of whether he would leave NATO.
"I wouldn't be telling you what I'm willing to do - certainly I'm not going to give up options - but it's very important."
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Laws drafted in before Trump's second term prohibit him from removing the US from the alliance without approval of a two-thirds Senate super-majority or an act of Congress.
But you also aren't supposed to capture a sitting head of state of another country in the dead of night, and Trump seemed comfortable breaking those rules in Venezuela.
Can NATO survive without the US?
Ask many key European leaders and officials, and they will tell you the US is the bedrock of the NATO alliance.
A key issue is Article 5 in the treaty, which says an attack on one is an attack on all.
With Greenland part of Denmark, and Denmark being a NATO member, this creates a clear problem.
Danish Prime Minister Mette Frederiksen was frank in her view on the matter.
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"If the United States chooses to attack another NATO country militarily, then everything stops," Frederiksen told Danish broadcaster TV2 last week.
"That is, including our NATO and thus the security that has been provided since the end of the Second World War."
Trump also seems to think NATO wouldn't last should the US pull out, judging by his comments yesterday.
"I'm the one that saved NATO," he said on Air Force One.
How have Russia and China reacted to the Greenland dispute?
Russia and China are clearly a motivator for Trump's hawkish instincts on Greenland, as he claims matters of national security.
"NATO should be leading the way for us to get it [Greenland]. IF WE DON'T, RUSSIA OR CHINA WILL, AND THAT IS NOT GOING TO HAPPEN!" he wrote on Truth Social this week.
China has an Arctic policy called the Polar Silk Road, launched in 2018, but a spokesperson for the government insisted their goals weren't military.
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"China's activities in the Arctic are aimed at promoting peace, stability, and sustainable development in the region and are in accordance with international law," Chinese Foreign Ministry spokesperson Mao Ning said earlier this week.
On the Russian side, top officials have made cryptic remarks regarding their views on Greenland.
"Trump needs to hurry. According to unverified information, in a few days there could be a sudden referendum, at which the entire 55,000-strong Greenland could vote to join Russia," former Russian President Dmitry Medvedev said earlier this week, according to Interfax.
Any turbulence with NATO would no doubt help Russian President Vladimir Putin in his war in Ukraine, with the alliance being a key supporter of the country Putin has been at war with since 2022.
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