Japanese auto stocks fell sharply after new U.S. tariffs against Mexico, Canada and China raised concerns about their U.S.

President Donald Trump said on Sunday night that more tariffs, this time on the 27-member European Union, will "definitely" happen.

Yahoo Finance will chronicle the latest news and updates on Trump's tariffs — from the threats to the eventual policy.

Executives have been able to deflect questions about dealing with tariffs before Saturday's announcement, and many wanted to ...