European leaders are increasingly discussing the creation of an alternative security framework outside NATO, amid growing doubts about the reliability of the United States as a long-term ally following threats by US President Donald Trump to annex Greenland, Politico reported on January 19. According to European officials cited by the outlet, Trump’s remarks about Greenland—a sovereign Danish territory—marked a turning point, convincing many capitals that Washington may no longer be a dependable security guarantor. Behind closed doors, officials described the idea of annexation as reckless and warned that it crossed a clear red line for Europe’s allies. The debate has...