Trump’s Firing Spree, and an ‘Invisible Threat’ in L.A.

Plus, DeepSeek’s shock to the top. On Today’s Episode: White House Budget Office Orders Pause in All Federal Loans and Grants, by Chris Cameron Trump Administration Halts H.I.V. Drug Distribution in Poor Countries, by Apoorva Mandavilli What to Know About DeepSeek and How It Is Upending A.I., by Cade Metz Airborne Lead and Chlorine Levels Soared as L.A. Wildfires Raged, by Hiroko Tabuchi and Mira Rojanasakul Crafting a Haggis for American Tastes (and Import Restrictions), by Remy Tumin Tune in every weekday morning.