National security newsletters

NewsletterFIT tracks 28 newsletters that cover National security as a primary topic, 26 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are Seymour Hersh (238K), Gingrich 360 (208K) and Ken Klippenstein (196K). Brands detected sponsoring these newsletters recently include DeepSeek, Global Affairs Canada and Committee.

Updated Oct 31, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    Seymour Hersh238K subscribers

    SubstackWeekly · last post 17 days ago

    Likely audience: Political analysts

  2. 2
    Gingrich 360208K subscribers

    SubstackEvery two weeks · last post 18 days ago

    Likely audience: National Security Analysts

  3. 3
    Ken Klippenstein196K subscribers

    SubstackEvery two weeks · last post 23 days ago

    Likely audience: Political analysts

  4. 4
    The Schiff Notes100K subscribers

    SubstackEvery two weeks · last post 22 days ago

    Likely audience: Military families

  5. 5
    ChinaTalk82K subscribers

    SubstackWeekly · last post 20 days ago

    Likely audience: Geopolitical strategists

    Sponsors detected: DeepSeek

  6. 6
    The Bureau38K subscribers

    SubstackDaily · last post 16 days ago

    Likely audience: journalists

    Sponsors detected: Global Affairs Canada

  7. 7
    Frank Figliuzzi28K subscribers

    SubstackSeveral times a week · last post 24 days ago

    Likely audience: Content creators

  8. 8
    Postliberal Order15K subscribers

    SubstackEvery two weeks · last post 26 days ago

    Likely audience: Policy researchers

  9. 9
    Rory’s Always On Newsletter14K subscribers

    SubstackWeekly · last post 16 days ago

    Likely audience: Parkinson's patients

    Sponsors detected: Cure Parkinson's

  10. 10
    The Steady State10K subscribers

    SubstackEvery two weeks · last post 12 days ago

    Likely audience: National security professionals

  11. 11
    Tulsi T Gabbard9K subscribers

    SubstackSeveral times a week · last post 20 days ago

    Likely audience: Policy analysts

  12. 12
    Christian Warrior Prepper9K subscribers

    SubstackEvery two weeks · last post 14 days ago

    Likely audience: Government officials

  13. 13
    Renegade Resources9K subscribers

    SubstackMonthly or less · last post Aug 31, 2026

    Likely audience: energy policy professionals

  14. 14
    Pillole di storia9K subscribers

    SubstackMonthly or less · last post 50 days ago

    Likely audience: History enthusiasts

  15. 15
    The Hundred8K subscribers

    SubstackMonthly or less · last post 16 days ago

    Likely audience: National security professionals

  16. 16
    Mark’s Substack7K subscribers

    SubstackEvery two weeks · last post 25 days ago

    Likely audience: Policy makers

  17. 17
    Chris Miller's Newsletter7K subscribers

    SubstackMonthly or less · last post 22 days ago

    Likely audience: Supply chain managers

  18. 18
    【公式】カナダ人ニュース’s Newsletter5K subscribers

    SubstackEvery two weeks · last post 33 days ago

    Likely audience: Geopolitics enthusiasts

  19. 19
    Un-Diplomatic5K subscribers

    SubstackEvery two weeks · last post 9 days ago

    Likely audience: Former intelligence officers

  20. 20
    Wesley Wark’s National Security and Intelligence Newsletter4K subscribers

    SubstackEvery two weeks · last post 11 days ago

    Likely audience: National security analysts

  21. 21
    The Wayfinder4K subscribers

    SubstackEvery two weeks · last post 10 days ago

    Likely audience: policy analysts

  22. 22
    Geopolitics of AGI4K subscribers

    SubstackMonthly or less · last post 9 days ago

    Likely audience: AI researchers

  23. 23
    Grab a Chip｜半導體速報4K subscribers

    SubstackMonthly or less · last post 51 days ago

    Likely audience: policy makers

  24. 24
    Sue Gordon3K subscribers

    SubstackMonthly or less · last post 11 days ago

    Likely audience: Policy analysts

  25. 25
    State of Tel Aviv—

    SubstackWeekly · last post 22 days ago

    Likely audience: Jewish community members

  26. 26
    Present Danger: China—

    SubstackEvery two weeks · last post 32 days ago

    Likely audience: National security professionals

    Sponsors detected: Committee

  27. 27
    Just Security9K subscribers

    Substacklast post Apr 23, 2026

    Likely audience: Policy analysts

  28. 28
    All Across America—

    Substacklast post May 15, 2024

    Likely audience: Defense contractors

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