The incoming president promised “tariffs all the way” unless Europe bought more U.S. oil and gas. European officials have no clear strategy for avoiding a trade war.

Donald Trump has said he will impose tariffs on the European Union if the bloc does not make up its "tremendous" trade deficit with the United States.

President-elect Donald Trump doubled down on his tariff threats Thursday night, pledging to raise tariffs on European Union nations unless they increase their purchases of American oil and gas to narrow the trade gap with the United States.

Donald Trump, the president-elect of the United States, has issued another warning to the European Union, threatening tariffs if its member states do not increase their purchase of American oil and gas.

Trump has made tariffs a central part of his plans when he moves back into the White House next month.

European shares were on course to post their worst week in three months on Friday, as U.S. President-elect Donald Trump's comments about potential tariffs on the European Union spooked investors already worried about the U.