Speaking at the World Economic Forum in Davos, Trump said he had once sought approval for a project in Ireland, but ditched it once he was told that it would take “five to six years ... And I said, ‘You have to be kidding.'"

President Trump doubled down on the prospect of across-the-board tariffs in a video appearance to business executives and politicians gathered in Davos, Switzerland.

Europe is ready to respond in a "proportionate way" if U.S. President Donald Trump imposes any tariffs, Valdis Dombrovskis, EU commissioner for economy and productivity, told CNBC in an interview on the sidelines of the World Economic Forum in Davos,