Denmark’s defence ministry has reportedly instructed its troops to prepare to respond immediately if any country tries to seize Greenland by force. The order comes as US President Donald Trump continues to threaten taking control of Greenland, which remains under Danish authority.
According to the directive, Danish troops must open fire without waiting for direct orders if an invasion attempt takes place.
Cold War Rule Allows Immediate Action
The instruction follows a military rule introduced in 1952 during the Cold War. The rule requires soldiers to “immediately take up the fight” against any foreign force.
It also states that troops must act “without waiting for or seeking orders, even if the commanders in question are not aware of the declaration of war or state of war”.
This rule remains active today and applies to Greenland.
Rule Born From Nazi Invasion of Denmark
The policy traces its origins to the 1940 Nazi invasion of Denmark. At the time, German forces quickly took control of Copenhagen and other cities.
Danish forces failed to respond effectively. As a result, military leaders later pushed for a clear and decisive rule that would allow instant resistance. This led to the creation of the “shoot first” directive, which has stayed in force ever since.
Why Trump Wants Greenland
Donald Trump has repeatedly said the United States needs Greenland for defence purposes. He believes the island holds major strategic value.
“I will say this about Greenland - we need Greenland from a national security standpoint. It’s very strategic right now. Greenland is covered with Russian and Chinese ships all over the place," Trump said recently.
Despite objections from Denmark and Greenland, Trump has continued to repeat his demand.
NATO Alliance Faces Strain
Denmark is a NATO member and controls Greenland’s defence. When asked whether protecting NATO or acquiring Greenland mattered more, Trump gave a blunt response.
"It may be a choice," he told the New York Times.
The remark raised concerns about unity within the military alliance.
US and Danish Officials Hold Talks
As tensions increased, senior US officials met envoys from Denmark and Greenland in Washington. Denmark’s ambassador Jesper Moller Sorensen and Greenland’s chief representative Jacob Isbosethsen attended the meeting.
US secretary of state Marco Rubio is also expected to hold discussions with Danish officials on the issue.
Greenland Leaders Reject Trump’s Claims
Greenland has firmly opposed any attempt to take control of the island. Prime minister Jens-Frederik Nielsen criticised Trump’s comments and rejected comparisons to military action elsewhere.
He said linking Greenland to Venezuela and possible military intervention was “disrespectful”. The dispute continues as diplomatic efforts try to prevent further escalation.