President Trump has chosen John R. Bolton to be his new national security adviser. In 2005, a Republican-controlled Senate committee refused to confirm Mr. Bolton as President George W. Bush’s ambassador to the United Nations. We look back at those confirmation hearings, which portrayed Mr. Bolton as a threat to national security. Guest: Elizabeth Williamson, who writes about Washington in the Trump era for The New York Times. For more information on today’s episode, visit nytimes.com/thedaily.

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.