Peter Rough joins CBC News Network's Andrew Nichols to discuss U.S. Defense Secretary Jim Mattis and what it means such allies, such as Canada going forward.
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President Donald Trump shakes hands with President of the European Commission Ursula von der Leyen as he announces a trade deal with the EU at Trump Turnberry golf club on July 27, 2025, in Turnberry, Scotland. (Andrew Harnik via Getty Images)