We convened an expert panel for an emergency WONK session to talk about President-elect Donald Trump's latest tariff threats and Prime Minister Justin Trudeau's surprise dinner at Mar-a-Lago. Host Edward Greenspon talks with Janice Stein, the Founding Director of the Munk School of Global Affairs & Public Policy, Steve Verheul, Canada's former chief trade negotiator, and Andrew Phillips, a columnist at The Toronto Star and the author of PPF’s weekly Canada-U.S. newsletter, about the high stakes, what Canada can do next and whether or not retaliation works.