President Donald Trump’s tariff threats over Greenland have strained relations with America's key NATO allies. European leaders, including French President Emmanuel Macron, criticized Trump's approach on Tuesday, warning of potential retaliation. The European Union's top official calls the tariffs a "mistake," questioning Trump's reliability. Trump argues the U.S. needs Greenland to counter threats from China and Russia. Greenland's leader insists on respect for international law. Sarah Dickerson, from the UNC-Chapel Hill Kenan Institute of Private Enterprise, joined Jeff Hamlin to discuss the international impact of the tariffs.