The staff writer John Cassidy joins Tyler Foggatt to discuss the recent meltdown of the U.S. stock market, Donald Trump’s long-standing support for tariffs, and what the potential death of an American-dominated free-trade system could mean for the global economy. This week’s reading: “Will Trumpian Uncertainty Knock the Economy Into a Recession?,” by John Cassidy “Who Gets to Determine Greenland’s Future?,” by Louise Bokkenheuser “What’s Next for Ukraine?,” by Joshua Yaffa “Canada, the Northern Outpost of Sanity,” by Bill McKibben “Can Americans Still Be Convinced That Principle Is Worth Figh...