Staring down the barrel of a potential trade war, Canada's leaders took a stand and fought back against U.S. President Donald Trump, an act rarely seen on the world stage against America's two-time leader. Geoffrey Johnston, an International Affairs columnist with the Kingston Whig-Standard, joins Andrew Pinsent on CFRA Live.

<p>Staring down the barrel of a potential trade war, Canada's leaders took a stand and fought back against U.S. President Donald Trump, an act rarely seen on the world stage against America's two-time leader. Geoffrey Johnston, an International Affairs columnist with the Kingston Whig-Standard, joins Andrew Pinsent on CFRA Live.</p>