Former central banker Mark Carney will become Canada’s next prime minister after the governing Liberal Party elected him its leader Sunday as the country deals with U.S. President Donald Trump’s trade war and annexation threat,

Economist and former Governor of the Bank of England Mark Carney has been elected to succeed Justin Trudeau as Liberal Party leader and Canada’s prime minister. The election comes at a critical time in foreign relations between Canada and the United States, as both nations impose historic tariffs and prepare for an impending trade war.

Frontrunners include Chrystia Freeland and Mark Carney, who are making the case they can guide Canada through domestic and international issues. At the top of the list: mounting trade tensions with the United States.