President Donald Trump's threats to impose punishing tariffs on Canada and Mexico may be part of a strategy to gain leverage ahead of new negotiations on a regional trade agreement, experts said.

The premier of Ontario, Canada's most populous province, said on Friday he would call an early election, citing the need for a strong mandate to fight against tariffs threatened by U.S. President Donald Trump.

President Donald Trump reportedly elicited gasps from the international crowd gathered at the World Economic Forum in Davos, Switzerland, on Thursday when he suggested that Canada could become a U.S.