Since winning re-election, president-elect Donald Trump has expressed an interest in acquiring Greenland.
His aims surrounding Greenland coincide with his repeated claims that Canada should become the 51st state of the US and him directing the US military to draw up options to achieve his goal of “reclaiming” the Panama Canal.
Here is everything you need to know about the US president’s proposals and if they could actually happen.
Why does Trump want Greenland?
National security purposes
Greenland is the world’s largest island and a semiautonomous territory of Denmark. With a population of 57,000, it has been part of Denmark for 600 years.
It is also a founding member of NATO and home to a large US military base.
Straddling the Arctic circle between the US, Russia and Europe, the island offers a unique geopolitical advantage that America has eyed for more than 150 years.
Image: The village of Kangaamiut in Greenland. Pic: AP
It’s even more valuable as the Arctic opens up more to shipping and trade.
The idea of purchasing Greenland is not a new one for Mr Trump, who raised it as a possibility during his first term in office. But he has since reiterated the benefit it could have for America’s national security.
Image: Pic: Emil Stach/Ritzau Scanpix/Reuters
“We need greater national security purposes,” Mr Trump has said in the past. “I’ve been told that for a long time, long before I even ran [for president].
“People really don’t even know that Denmark has any legal right to it, but if they do, they should give it up because we need it for national security.”
Mr Trump’s claim to the island coincided with a visit by his son, Donald Trump Jr, back in January.
Usha Vance, wife of Vice President JD Vance, will also lead a US delegation to the island which the White House said had been organised as a chance to learn about Greenland.
The delegation will “visit historical sites, learn about Greenlandic heritage, and attend the Avannaata Qimussersu, Greenland’s national dogsled race”.
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Does Greenland want to be part of the US?
Rich in natural resources
As well as its location, Greenland holds rich deposits of various natural resources.
Locked inside the island are valuable rare earth minerals needed for telecommunications, as well as uranium, billions of untapped barrels of oil and a vast supply of natural gas that used to be inaccessible but is becoming less so.
Many of the same minerals are currently mostly supplied by China, so other countries such as the US are interested in tapping into available resources closer to home.
A front-row seat to the climate crisis
More than the oil, gas or minerals, Greenland has a lot of ice – and provides a front-row seat to the globe’s climate crisis.
If that ice melts, it would reshape coastlines across the globe and has the potential to dramatically shift weather patterns.
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Why is Greenland so important?
In fact, Greenland holds enough ice that if it all melts, the world’s seas would rise by 24ft (7.4m).
Greenland also influences hurricane and winter storm activity. Because of its mountains of ice, it has the power to change patterns in the jet stream, which brings storms across the globe and dictates daily weather.
Often, especially in winter, a blocking system of high pressure off Greenland causes Arctic air to plunge to the west and east, sweeping across North America and Europe, winter weather expert Judah Cohen told the Associated Press.
Image: A glacier in Greenland. Pic: AP
What effect could this have on the UK?
British politician and security expert Mike Martin explained on X that the seas between Greenland and the UK – which has Iceland in the middle – are “utterly vital” for NATO.
He explained that during the Cold War, the UK would often have 50 ships stationed in the area to look after the Greenland-Iceland-UK (GIUK) gap – which is the “only sensible route” that the Russian northern fleet has to get into the Atlantic Ocean.
Both the UK and Denmark continue to have a shared security interest in the gap.
The UK government website states that as part of the UK’s Arctic Policy Framework, it will continue to develop military capability in collaboration with Denmark, to allow it to operate in the region and in order to safeguard UK interests and those of its allies.
However, if the territory is taken over by the US, this collaboration could be affected.
British Foreign Secretary David Lammy told Sky News at the beginning of the year that the comments were “classic Donald Trump”.
“He came in very clearly saying he was going to work for working people,” Mr Lammy said. “And, he sees American national economic security as centring that.
“That is why he’s raising issues, in relation to the Panama Canal, and I suspect to Greenland.”
He added that behind Mr Trump’s “intensity”, there are “actually quite serious national security and economic issues”.
‘Greenland is not for sale’
Ever since Mr Trump expressed an interest in Greenland the country’s government has opposed him.
As the country headed to the polls in early March to elect a new prime minister, Mr Trump promised “billions of dollars” in investment telling them he will “make you rich”.
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Why Greenland’s election result is a blow to Trump
The Demokraatit party won 30% of the vote in the election, handing Jens-Frederik Nielsen the win. Although his party favours independence, it prefers a slow move away from Denmark.
Mr Nielsen told Sky News’ international affairs editor Dominic Waghorn that he hopes his victory sends a clear message to Mr Trump that “we are not for sale”.
“We don’t want to be Americans. No, we don’t want to be Danes. We want to be Greenlanders. And we want our own independence in the future. And we want to build our own country by ourselves, not with his hope,” he said.
Ahead of the delegation visit led by Mrs Vance, all five parties in Greenland’s parliament issued a joint statement last week rejecting Mr Trump’s remarks.
Danish Prime Minister Mette Frederiksen has also said she did not believe the US would use military or economic power to secure control over Greenland.
“Greenland is not for sale,” Ms Frederiksen said, adding: “We need to stay calm and stick to our principles.”
Image: Denmark Prime Minister Mette Frederiksen has said ‘Greenland is not for sale’. Pic: AP
Referring to the US as Denmark’s “most important and closest ally” she said she welcomed the US taking a greater interest in the Arctic region, but said it would have to be done in a way that is “respectful of the Greenlandic people”.
Denmark has recognised Greenland’s right to independence at a time of its choosing.
French foreign minister Jean-Noel Barrot also weighed in on the matter earlier this year, saying that the European Union would not let “other nations of the world attack its sovereign borders, whoever they are”.
“If you’re asking me whether I think the United States will invade Greenland, my answer is no. But have we entered into a period of time when it is survival of the fittest? Then my answer is yes,” Mr Barrot said.
In Germany, Chancellor Olaf Scholz said the principle of inviolability of borders applies to every country no matter how powerful.
“Borders must not be moved by force,” Mr Scholz said in a reaction to Mr Trump’s remarks, although he did not mention the president by name.
Why does Trump want the Panama Canal?
The Panama Canal is a waterway that connects the Caribbean Sea with the Pacific Ocean. It acts as a shortcut route, saving time and costs for transporting goods, according to the Embassy of Panama website.
Under the Jimmy Carter administration, control of the canal was handed from the US to Panama in 1979, with the US ending its joint partnership in controlling the strategic waterway in 1999.
Image: A cargo ship on the Panama Canal. Pic: AP
It is now administered by the Panama Canal Authority, an autonomous government entity, although a Hong Kong-based contractor operates two ports connected to it.
Mr Trump has claimed that the US is being treated unfairly when it is “overcharged” higher rates for its ships to sail the canal than those of other countries.
He claimed Panama was in “violation” of a deal with the US and that “China is basically taking it over”.
“We gave the Panama Canal to Panama. We didn’t give it to China,” Mr Trump said on Tuesday. “They’ve abused that gift.”
Panamanian President Jose Raul Mulino denied in a video statement last month that China has influence over the canal and shot down the idea of the US taking back authority over it.
“Every square metre of the canal belongs to Panama and will continue to be so,” he said.
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Trump takes dig at Jimmy Carter on Panama Canal
What about Canada?
Mr Trump’s repeated attacks on Canada’s sovereignty has infuriated leadership in the country.
He has claimed that the country “only works as a state” adding the US doesn’t need any of their resources such as lumber or energy.
“As a state, it would be one of the great states anywhere,” Mr Trump said.
“This would be the most incredible country, visually. If you look at a map, they drew an artificial line right through it, between Canada and the US. Just a straight, artificial line. Somebody did it a long time ago, many many decades ago. Makes no sense. It’s so perfect as a great and cherished state.”
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Carney attacks Trump’s threats
Relations between the two countries have since dwindled, with new Canadian Prime Minister Mark Carney saying Canada faces the most “significant crisis of our lifetimes” because of the president’s “threats to our sovereignty”.
Mr Carney, who is the former governor of the Bank of England, has called a snap election after the resignation of Justin Trudeau. The election on 28 April is likely to come down to who is best equipped to take on Mr Trump.
Could Trump actually do any of this?
The incoming president has offered few details as to how he might carry out his plans to grow the US footprint.
He told Congress at the beginning of March that “America is back”, adding that the American Dream was bigger and better than ever before.
In reality, if Greenland becomes independent, it could choose to become associated with the US.
One option could be to form a so-called “free association” pact with America, similar to the status of Pacific island nations Marshall Islands, Micronesia and Palau.
Mr Trump has also suggested he would impose tariffs on Denmark if it resists his offer to purchase the island.
This could make things difficult for Danish companies, particularly drugmakers like Novo Nordisk, which sells the weight loss drug Wegovy and the type 2 diabetes medicine Ozempic.
Eswar Prasad, a professor of trade policy at Cornell University, told investment magazine Barron’s that the Trump administration could tailor specific tariffs to target products made by Danish companies regardless of where they are manufactured.
On Canada, Congress would first have to approve accepting a new state.
Canada would likely have to have a referendum to gauge voters’ interests in joining the US before more detailed aspects of the process could begin.
If Canada were to join the US – a highly unlikely prospect – its population of 41.6 million would make it the largest state, exceeding California’s 39.4 million residents.
It would also need two senators and 55 House seats – which would have huge effects on US presidental elections.
A senior Democrat has taken to the Senate floor to speak against US President Donald Trump – with the 17-plus-hour speech still ongoing.
Cory Booker, a New Jersey senator, began speaking around 7pm (midnight in the UK) and said he intended to disrupt the “normal business of the United States Senate for as long as I am physically able”.
Referring to Mr Trump’s presidency, he said: “I rise tonight because I believe sincerely that our country is in crisis.”
As of 5pm in the UK, Mr Booker was still speaking, having spoken for more than 17 hours. He has remained standing for the entire duration, as he would lose control of the floor if he left his desk or sat down.
Image: As of 4pm, Cory Booker has held the Senate floor for more than 16 hours. Pic: Senate Television / AP
Other Democrat senators have joined Mr Booker to ask questions so he can rest his voice, including Senate minority leader Chuck Schumer.
At the start of his speech, Mr Booker said: “These are not normal times in our nation. And they should not be treated as such in the United States Senate.
“The threats to the American people and American democracy are grave and urgent, and we all must do more to stand against them.”
Overnight, he referenced Strom Thurmond of South Carolina, who filibustered for 24 hours and 18 minutes against the Civil Rights Act of 1957.
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“You think we got civil rights one day because Strom Thurmond – after filibustering for 24 hours – you think we got civil rights because he came to the floor one day and said ‘I’ve seen the light’,” he said.
“No, we got civil rights because people marched for it, sweat for it and [civil rights leader] John Lewis bled for it.”
Only Mr Thurmond and Republican Senator Ted Cruz – who spoke for 21 hours and 19 minutes against the Affordable Care Act in 2013 – have held the Senate floor for longer than Mr Booker.
Mangione has not yet been asked to enter a plea to the federal charges.
Here’s what we know about him.
Wealth, private school and Ivy League education
Mangione was born and raised in Maryland and has links to San Francisco and Hawaii.
His social media lists him as being from Towson, a well-to-do area to the north of the city of Baltimore.
He is the grandson of a wealthy property developer and philanthropist and the cousin of a current Maryland state legislator.
He attended Gilman School – a private all-boys school in Baltimore. The school’s annual fees are up to $37,690 (around £29,000) and it boasts alumni including NFL stars and former senators.
After graduating in 2016, Mangione went to the University of Pennsylvania, one of America’s elite Ivy League schools.
According to his social media, he studied computer science and launched a group named UPGRADE (UPenn Game Research and Development Environment).
A university spokesperson said he earned undergraduate and graduate degrees there.
He later co-founded his own computer game company, which focused on small, simplistic games.
Image: Mangione went to a prestigious Ivy League university. Pic: LinkedIn
‘No complaints – a great guy’
According to his LinkedIn page, Mangione moved to California in 2020 and worked for the car-buying website TrueCar. The firm’s boss said he left last year.
Mangione currently lists himself as from Honolulu on LinkedIn, with pictures on Instagram showing him on the Hawaiian island.
In the first half of 2022, he reportedly lived at Surfbreak, a co-living space aimed at remote workers in Honolulu’s Waikiki neighbourhood.
“Luigi was just widely considered to be a great guy. There were no complaints,” Josiah Ryan, a spokesperson for Surfbreak’s owner, told the AP news agency.
“There was no sign that might point to these alleged crimes they’re saying he committed.”
Mr Ryan said Mangione left to get surgery on the US mainland for chronic back pain he suffered from since childhood.
Document reveals back condition
Mangione wrote about his health issue online, saying he has spondylolisthesis – a condition where one of the bones in the spine slips forwards.
He details the severity of his “injury” as “low grade two” and goes into fitness goals, diet advice and notes about the condition.
Image: The suspect’s notes say he has back condition spondylolisthesis
Image: His X banner image shows a back X-ray
It’s unclear if the condition is linked to the motive, which police have not publicly identified, but it gives context about his health issues.
Analysis of his Goodreads profile also shows he read books including Crooked: Outwitting The Back Pain Industry and Getting On The Road To Recovery, and Why We Get Sick: The Hidden Epidemic At The Root Of Most Chronic Disease – And How To Fight It.
A banner image on his X account also features an X-ray of a lower back with screws.
Law enforcement officials told NBC News they are looking at whether the X-ray is Mangione’s or from a relative and whether it’s connected to the shooting.
‘Violence is necessary to survive’
Mangione appears to have had an active social media presence.
His X account regularly shared and reposted pieces about topics such as artificial intelligence (AI), philosophy, and the future of humanity.
His Goodreads account also gave a four-star review to Industrial Society And Its Future – by notorious US terrorist Theodore Kaczynski.
The piece, which rails against technological advancement, became known as the Unabomber Manifesto after its author began a mail bombing campaign which lasted nearly 20 years.
Three people were killed and dozens were injured before Kaczynski’s arrest in 1996.
The Goodreads review said: “When all other forms of communication fail, violence is necessary to survive. You may not like his methods, but to see things from his perspective, it’s not terrorism, it’s war and revolution.
“‘Violence never solved anything’ is a statement uttered by cowards and predators.”
Image: Luigi Mangione. Pic: Facebook
Why are some calling Mangione a ‘hero’?
A search of social media sites such as Reddit reveals a thread of people who are sympathetic to the suspect.
Highly rated comments on the site include: “Screw the McDonald’s employee that ratted him out” and “Only a matter of time till shirts with #FreeLuigi start popping up”.
To many, these are shocking comments about someone accused of carrying out a cold-blooded killing. But what’s behind them?
Many in the US pay thousands in expensive insurance premiums to cover themselves and their family, while others rely on the Medicare federal insurance programme.
Support for Mangione appears to come from resentment over this and accusations that companies go to great lengths to avoid paying for treatments in order to maximise their profits.
“He got charged with murder quicker than insurance companies deny claims”, said a comment on Reddit with nearly 7,000 likes.
One post that went viral on X before the suspect’s arrest was from Anthony Zenkus, a Columbia University professor.
He wrote: “We mourn the deaths of the 68,000 Americans who needlessly die each year so that insurance company execs like Brian Thompson can become multimillionaires.”
Image: Police shared this picture of the suspect following the shooting. Pic: NYPD
A chart shared widely on X claims to show denial rates by UnitedHealthcare exceed those of competitors, using data from consumer finance website ValuePenguin. This is consistent with publicly available data from 2023 analysed by Sky News.
Other people online appear to be angry about what they say is the disparity between the resources put into Mr Thompson’s case and how less well-off people are treated.
One comment on Reddit with 4,000 likes says: “The murdered guy in death, like in life, is still sucking up a huge undeserved and unwanted portion of resources.
“How many underprivileged people’s murders are going unsolved because NYPD and the feds are spending millions on this overpaid, rich, morally questionable millionaire’s murder.”
Arrested in McDonald’s with ‘ghost gun’
Mangione was detained in a Pennsylvania McDonald’s after a five-day search, carrying a gun that matched the one used in the shooting and a fake ID, police said.
He was arrested in Altoona, around 230 miles (370km) west of New York, after a tip-off from a McDonald’s employee who recognised him from the police appeals.
Mangione also had a fake New Jersey ID matching one used by the suspect to check into a hostel before the killing, said New York police commissioner Jessica Tisch.
He was found carrying a “handwritten document” that Ms Tisch said “spoke to both his motivation and mindset”.
Joseph Kenny, New York’s chief of detectives, said it appeared to show “some ill-will towards corporate America”.
Pennsylvania prosecutor Peter Weeks said Mangione was found with a passport and $10,000 (£7,840) – $2,000 of it in foreign currency.
‘Message’ on bullets
Brian Thompson, 50, was chief executive of UnitedHealthcare – the fourth-largest public company in the US behind Walmart, Amazon, and Apple – and was paid about $10m (£7.8m) a year.
It’s the largest provider of Medicare Advantage plans and manages insurance for employers and state and federally funded programmes.
Mr Thompson – who was married with two sons – was shot on 4 December as he was walking to a New York hotel where his company was holding an investors’ conference.
Image: CCTV showed a person shooting Mr Thompson from behind. Pic: NYPD/Reuters
As Mr Thompson walked towards the Hilton hotel on Sixth Avenue, a gunman appeared behind him from between parked cars.
He was shot in the back and calf and died from his injuries.
The words “defend”, “deny”, and “depose” were written on the cases of bullets found at the scene – similar to the title of a book that criticises health insurance companies.
Mr Thompson’s wife said he was an “incredibly loving father to our two sons” and a “loving, generous, talented man who truly lived life to the fullest”.
UnitedHealthcare called him a “highly respected colleague and friend to all who worked with him”.
A Democratic senator is delivering a marathon speech in the US Senate in protest against Donald Trump.
Cory Booker, 55, took to the floor at 7pm local time on Monday (midnight in the UK), saying he would remain there as long as he was “physically able”.
As of 5pm in the UK, Mr Booker was still going – more than 17 hours after he started.
The senator for New Jersey said his goal is to “uplift the stories of Americans who are being harmed by the Trump administration’s reckless actions, attempts to undermine our institutions, and disregard for the rule of law”.
During his speech, Mr Booker has only taken brief breaks from speaking, giving the floor instead to questions from his Democratic colleagues, according to Sky News’ US partner network, NBC News.
According to the rules of the Senate, as long as he stays at the podium Mr Booker will hold the floor – meaning he cannot leave at any point, even to go to the toilet or to eat.
So who exactly is the Democratic senator, and what is his multi-hour speech all about?
Image: Mr Booker has criticised the Trump administration during his speech. Pic: Senate Television via AP
Rising star of Democratic Party
Mr Booker was born in Washington DC and moved to northern New Jersey when he was a boy.
He is a graduate of Stanford University and Yale Law and started his career as a lawyer for charities.
Entering politics, he was considered a rising star in the Democratic Party. He was elected to serve on the city council of New Jersey’s biggest state, Newark, and then as mayor, a position he held until 2013.
He was first elected to the US Senate in 2013 during a special election held after the death of politician and businessman Frank Lautenberg.
He went on to win his first full term in 2014 and was re-elected in 2020.
2020 presidential bid
In February 2019 Mr Booker launched his bid for the US presidency from the steps of his home in Newark.
At the time, he played on his personal ties to the “low-income, inner city community” and urged for the US to return to a “common sense of purpose”.
He later dropped out of the race after struggling to raise the money required to make a bid for the White House.
Image: Senator Cory Booker. Pic: AP
Why is he speaking in the Senate?
By holding the floor in the Senate, Mr Booker is protesting against the Trump administration.
Before he began, the senator said he had the intention of “getting in some good trouble”, NBC News reported.
He read letters from constituents about how Mr Trump’s cuts were already taking a toll on their lives.
The longest Senate speeches in history
As he reached 16 hours of speaking, Mr Booker already had the sixth-longest speech in Senate history.
However, he still has a while to go to beat the all-time record for the longest individual speech.
According to the Senate’s website, this belongs to Strom Thurmond of South Carolina, who filibustered for 24 hours and 18 minutes against the Civil Rights Act of 1957.
Only one other sitting senator has spoken for longer than Mr Booker.
In 2013, Senator Ted Cruz, a Republican from Texas, held the floor for 21 hours and 19 minutes to contest Barack Obama’s healthcare reform law.
As well as speaking about health law, Mr Cruz’s speech made headlines as he read the entirety of the Dr Seuss book Green Eggs And Ham, which he said at the time was a bedtime story to his children.
He claimed the US was giving up being a global leader, citing Mr Trump’s proposals to take over Greenland and Canada while feuding with longtime allies.
He also occasionally took aim at Elon Musk, the richest person in the world, who is advising Mr Trump and leading the Department of Government Efficiency (DOGE).
“In just 71 days, the president of the United States has inflicted so much harm on Americans’ safety; financial stability; the core foundations of our democracy,” Mr Booker said on the floor.
“These are not normal times in America. And they should not be treated as such in the United States Senate.”
Appearing to waver slightly on Tuesday morning, Mr Booker was accompanied by Senator Chris Murphy. In 2016, Mr Booker joined the Connecticut Democrat when he held the floor for almost 15 hours to argue for gun control legislation.
Some reports have referred to Mr Booker’s speech as a filibuster, but technically it is not.
A filibuster is a speech meant to halt the advance of a specific piece of legislation.
Mr Booker’s performance is instead a broader critique of Mr Trump’s agenda, meant to hold up any business scheduled to take place in the Senate and draw attention to what Democrats are doing to contest the president.
Democrats have been forced to use these types of opposition methods as they do not hold a majority in either congressional chamber.