Donald Trump's increasingly strident approach to relations with Canada is provoking fear about the potential consequences north of the border and questions about just how serious the U.S. president-elect actually is.

US President-elect Donald Trump has once again threatened to impose substantial tariffs on Canada saying he intended to use "economic force" to acquire its neighbour to the north.While ruling out use of military force to do so,

Donald Trump has once again stirred a row by saying that he wants to acquire Canada. However, he doesn't want want to annex Canada by military force- but by economic force. Trump said US is spending hundreds of billions a year to protect it.