What single figure connects the 2008 financial crisis, the creation of the 2010 Dodd-Frank Act, the Tea Party movement, Donald J. Trump’s election and, now, the potential dismantling of the biggest safeguard against America’s economic ruin? His name is Gary D. Cohn. Also, a Times investigation goes inside the world of the Islamic State and finds that terrorists no longer have to cross borders to carry out their attacks.

Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify. You can also subscribe via your favorite podcast app here https://www.nytimes.com/activate-access/audio?source=podcatcher. For more podcasts and narrated articles, download The New York Times app at nytimes.com/app.

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.