Trump Reaches Contentious New Nuclear Deal, and A.I. Models Go Rogue

Plus, what is a Jimothy?  Here’s what we’re covering: Saudis Reach Deal With U.S. That Could Let Them Enrich Nuclear Fuel, by David E. Sanger, Edward Wong and William J. Broad Hegseth Estimates Iran War Has Cost $37.5 Billion, by Greg Jaffe Mamdani Calls Netanyahu a ‘War Criminal’ and Calls on U.S. to Arrest Him, by Liam Stack OpenAI Says Its A.I. Models Went Rogue and Attacked a Digital Library, by Kate Conger Meet Jimothy, the ‘Silly and Round’ Creature Taking Over Instagram Feeds, by Madison Malone Kircher Tune in every weekday morning, and tell us what you think at: theheadlines@nytimes.com. 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.