Why did Trump impose tariffs on eight European countries that do not support the U.S. acquisition of Greenland? This is actually the extreme strategic pressure that Trump is best at. At first glance, it seems legally unfeasible and economically troublesome for himself, but politically it is not without logic. Legally speaking, whether Europe supports it or not has nothing to do with Trump's ability to achieve his goals. International law stipulates that territorial transfers must be based on the consent of the parties involved (Denmark) and the self-determination of the people in the autonomous region (Greenland). So even if Denmark concedes and agrees, a local referendum in Greenland opposing it would reject Trump's request. Economically, imposing tariffs on allies puts pressure on both domestic inflation and GDP growth. Especially since Trump is also at odds with the judicial system, the legality of the tariffs is still not definitively determined. But Trump's logic is political: European security has long relied on the U.S., with the U.S. bearing the costs while Europe enjoys the benefits. So why not turn the security bill directly into a trade bill? Moreover, if he wants to strike, he strikes all at once, challenging the entire European security system and binding these countries together. This can create internal pressure within Europe, as Denmark will be pursued by its allies asking why it should make the entire Europe pay for Greenland. At the same time, it forces NATO to clarify whether it is a collective defense alliance or a U.S. protection club? Finally, it showcases toughness to American voters, proving that he is fighting for strategic assets for the U.S. Starting February 1, a 10% tariff will be implemented, and if they still disagree, it will increase to 25% on June 1. This leaves four months for things to ferment, creating financial and political turmoil. What Trump is doing essentially denies the post-World War II order. If allies do not pay, then it is not a community of shared values. It is better to treat it as a line on the balance sheet and demand money directly. This is also why Europe is so angry; I don’t want to spend money, and you, America, are forcing me to pay for land? Are we still in the same camp?

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