The World Trade Organization is the referee for 164 trading partners, each with their own political and economic agendas. Lately, those agendas have gotten more complicated — especially with President Trump’s tariff blitz. Roberto Azevêdo, head of the W.T.O., tells us why it’s so hard to balance protectionism and globalism; what’s really behind the loss of jobs; and what he’d say to Trump (if he ever gets the chance).

There are a lot of factors that go into greatness, many of which are not obvious. A variety of Olympic and professional athletes tell us how they made it and what they sacrificed to get there. And if you can identify the sport most likely to get a kid into a top college — well then, touché! (Ep. 3 of “The Hidden Side of Sports” series.)