European leaders said they would respond firmly to higher levies on steel and aluminum, but they had yet to say what that retaliation would look like.

Mexico, Canada and the European Union on Tuesday condemned U.S. President Donald Trump's decision to impose tariffs on all steel and aluminum imports next month, a move that has fanned fears of a trade war as business and political leaders braced for yet more trade duty announcements from the new administration.

White House trade and manufacturing senior counselor Peter Navarro explains President Donald Trump’s trade agenda and relations with European leaders on ‘The Ingraham Angle.’