What does the debacle of the Iowa caucuses mean for the trajectory of the 2020 Democratic race? The columnists discuss the Democratic electorate's neat split on the ground in Iowa, Bernie Sanders's path to the nomination, and whether the Hawkeye State still deserves its first-in-the-nation status. Then, how worried should we be about the Wuhan coronavirus — and what does its spread say about China’s global standing? 

For background reading on this episode, visit nytimes.com/theargument.