EU chief says Trump's threats challenge Europe's security and prosperity, ahead of emergency summit

President Donald Trump's threats to annex Greenland and impose tariffs continue to raise concerns in Europe. European Council President António Costa says these actions challenge Europe's security and principles. Costa will convene an emergency summit in Brussels with EU leaders on Thursday. Trump's desire to acquire Greenland for what he says are security reasons has strained trust with European allies. Costa emphasizes that only Denmark and Greenland can decide their future. He says EU leaders are united in defending international law and are prepared to counter any coercion. They are rethinking relations with the U.S., a long-time ally.