US President Donald Trump's recent threat to annex Greenland and pressure Western allies to support his plan is unmatched and unprecedented. Faisal Islam calls it "a form of economic war being levied by the White House on its closest allies." Trump warned allies not to oppose his Greenland plan or face worsening trade relations with the US. This sudden and bold move has left officials in allied countries baffled. "Nobody in the world would assume that a threat like this—based on acquiring the land of your ally—would ever actually happen," Islam noted. He questioned whether Trump has support in Congress or within his administration to follow through. Some believe this may be the "biggest TACO (Trump will Chicken Out) of all time." While countries like Canada have faced trade slumps with the US, they have offset losses by boosting trade elsewhere, like with China. Canada's prime minister Mark Carney recently pushed for expanded trade with China, challenging the Trump administration's "China versus the world" approach. The real concern is not Trump's mention of a 10% tariff but the reasoning—seizing land from an ally and publicly threatening close partners. Islam asked how the world would react if China or Russia made similar threats to their allies. With Trump set to meet allied leaders at the World Economic Forum soon, many hope this startling threat will be dropped. Until then, capitals worldwide are watching US decision-making closely amid fears of fractured alliances and trade disruptions.