The provided sources unanimously and consistently support the statement that Donald Trump linked proposed tariffs on the European Union and the United Kingdom to the potential U.S. purchase of Greenland. There is no conflicting evidence among the ten sources. Multiple high-authority sources, including The Guardian, ABC News, and Reuters, explicitly report that Trump directly tied the imposition of tariffs to the condition that the U.S. be allowed to purchase Greenland. For example, sources directly attribute statements to the president that the tariffs would remain in place until the purchase was possible and quote him as saying he intended to use tariffs as leverage. The consistency of this reporting across a wide range of international news outlets (Associated Press, Reuters, ABC News, The Guardian, Deutsche Welle) strengthens the claim's credibility. Furthermore, the reports of the European Union calling an emergency meeting specifically in response to these threats serve as strong corroborating evidence that the link was explicitly made and perceived as a serious matter by European leaders. Even sources that use slightly softer language, such as stating the tariffs were "perceived as leverage" or that Trump "appeared to be using" them for this purpose, still align with the overall conclusion and do not contradict the more direct reports. Given the overwhelming and consistent nature of the evidence, the statement is assessed as highly likely to be true.