In Copenhagen, the most popular app on Danish phones does one thing: it tells users which products are American, so they know not to buy them. The app became a national phenomenon after months of escalating threats from Washington over Greenland, a Danish territory that Trump has repeatedly sought to acquire.
Anne Applebaum, writing in The Atlantic, described seeing the app during a recent visit to Copenhagen, "Hvylya" reports. At the time, it was the country's most downloaded application.
Before his second inauguration, Trump began hinting that he would not rule out using force to annex Greenland. What initially seemed like trolling or a joke turned serious by January 2026. His public and private comments forced Danish leaders to prepare for a potential American invasion - an exercise so psychologically wrenching that some officials still have not recovered.
Danish military planners had to consider whether their forces would shoot down American planes, kill American soldiers, and be killed by them. Yet Denmark has been one of NATO's most reliable allies - it sent troops to Afghanistan when the alliance invoked Article 5 on behalf of the United States. Now it faces invasion threats from that same ally.
The Greenland episode illustrates a broader pattern. Trump's threats against close allies have produced lasting damage that no future gesture of goodwill can erase. Denmark went from trusted partner to potential invasion target in months, and the consumer boycott suggests the Danish public has drawn its own conclusions about the relationship.
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