Former central banker Mark Carney was sworn in as Canada’s new prime minister on Friday, and will now try to steer his country through a trade war brought by U.S. President Donald Trump, annexation threats and an expected federal election.

Mark Carney, an economist and political newcomer, has been sworn in as Canada's new prime minister and delivered a speech vowing to "never" become a part of the United States. He takes office on Friday just days after being elected leader of the governing Liberal Party and amid an ongoing trade war with US President Donald Trump.