Donald Trump has only been president of the United States, this time around, for about three months. It has been a dramatic three months since his inauguration — so dramatic that some interesting aspects of the mercurial U.S. leader's impact on the world get less notice. They are often lost among the ways in which he has shocked the global order, global markets, alliances and the U.S. economy itself.

Yet since that inauguration, the president also seems to be creating a “Trump effect” on many, though not all, foreign elections, especially among countries that have been important U.S. allies and partners. In general, the effect has been to boost the popularity of left or center-left parties in national elections. Yet sometimes it is not just leftist parties that win, but rather a leader who stands up to Trump the most or seems to the public like the best-equipped figure to handle the White House.

This is an effect that started recently in Greenland, a Danish-controlled self-governing protectorate. Since his inauguration, Trump has repeatedly and publicly mused about annexing Greenland, sometimes suggesting the U.S. should do so by force.