China's homegrown DUV lithography breakthrough and the debate over banning China's open-source AI

Two big stories this week. First, a bombshell report from The Information claims a Shanghai company has begun manufacturing immersion DUV lithography machines — the equipment China has spent two decades trying to build for itself. Greg and co-host Adam Goodwin unpack what "immersion DUV" is, why five machines this year is both respectable and decades behind ASML, and the buried detail that may matter most: the Japanese components quietly helping China claim self-sufficiency. Greg argues the real prize isn't new machines but China's growing ability to service its huge installed fleet — and why every day BIS delays burns leverage the U.S. won't get back. Then: the Trump administration goes on record about Chinese open models — the Kratsios and Bessent statements accusing Moonshot AI of distilling Anthropic's Fable, the GB300 smuggling angle, Beijing's "AI hegemonism" rebuttal, and where the MATCH Act stands. It closes on the open-source debate itself: Dario Amodei's response to the NVIDIA–OpenAI–Google letter, and why the real question isn't open versus closed but what safety testing should apply past a certain capability threshold. Chapters: (00:00) Cold open & the week's two big stories (01:02) What immersion DUV lithography actually is — and why it matters (05:46) Why China wants to build these machines itself: chips as the new oil (09:11) A decades-old goal: Made in China 2025 and the roots of indigenization (13:19) Five machines this year — is that a big number? ASML for context (18:15) China's disinformation campaign vs. real scoops, and the Japanese-components problem (24:09) The spare-parts endgame: servicing the installed fleet as the real prize (30:19) BIS Under Secretary Kessler's testimony and "incomplete" allied cooperation (36:57) The MATCH Act, the foreign direct product rule, and the NDAA path (39:51) Kratsios and Bessent on Moonshot AI, Kimi K3, distillation & GB300 smuggling (45:32) China's Ministry of Commerce hits back: "AI hegemonism" (53:31) How industry is reacting — the letters, and who signed which (59:31) Wrap-up See Greg's full research archive and the Decision Tree newsletter at decisiontreeresearch.com.