Executive editor of @DefenseOne. Been aboard more than 50 warships; wrote a couple of books about it. navybook.bsky.social newsie.social/@navybook

Joined August 2011
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🧵1/ Thirty-eight years ago today, an Iranian mine tore a hole in the hull of the USS Samuel B. Roberts. The blast broke the frigate's keel, flooded its engineroom, and lit fires on several decks. Only the well-trained crew saved it.
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Bradley Peniston retweeted
NEW: Sen. Kirsten Gillibrand, D-N.Y., is spearheading a markup amendment to the Senate’s 2027 National Defense Authorization Act that would create a “Cyber Force” as the next armed service branch. The proposal would place it under the Army. The latest from @DefenseOne below 👇
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Unescorted access has never been an issue in any other administration including President Trump’s first term but now all of a sudden it’s a national security issue and the security of the Pentagon campus is apparently under threat.
STATEMENT: The Court granted the Department's request for a fourteen-day administrative stay while the D.C. Circuit Court of Appeals considers the Department's appeal. The Department will seek an emergency stay from the D.C. Circuit to preserve the security of the Pentagon during the pendency of the appeal. Journalists do not have unescorted access to the building but will continue to have press credentials and access to all press briefings, press conferences, and interviews.
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🧵1/ Thirty-eight years ago today, an Iranian mine tore a hole in the hull of the USS Samuel B. Roberts. The blast broke the frigate's keel, flooded its engineroom, and lit fires on several decks. Only the well-trained crew saved it.
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9/ “The Pentagon and National Security Council significantly underestimated Iran’s willingness to close the Strait…” CNN reports. As in 1987: “The assumption that the Iranians ‘wouldn’t dare’ was shattered.”
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10/ The Roberts' mining offers many lessons. Among them: A determined adversary finds cheap ways to hurt technologically advanced forces. The mine that nearly sank a U.S. Navy warship was based on a century-old design—and is scarcely less lethal today. usni.org/press/books/no-high…
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Bradley Peniston retweeted
Howdy, folks! I’m out in Colorado Springs this week for the @SpaceFoundation’s 41st Space Symposium. I’ll be covering national security, emerging tech, and so much more! If you’re here, let’s chat! Email me at tnovelly@defenseone.com or catch me on Signal at tomnovelly.01
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Bradley Peniston retweeted
The Pentagon Press Association, in its amicus brief to the court today, notes that thousands of workers without security clearances - from baristas to bakers - walk the unclassified hallways of the Pentagon. Why single out journalists who only walk in those unclassified spaces and move them out of the building?
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Via @wardcarroll.bsky.social April 2, 2023: The U.S. Navy's 1988 Savage 8-Hour War Against #Iran. Defense One Deputy Editor Brad Peniston @NavyBook joins Ward to discuss Operation Praying Mantis. youtube.com/watch?v=iH0qIQkm… #IranWar #IRGC #USNavy

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Bradley Peniston retweeted
President Trump just directed the entire federal government to stop using @AnthropicAI. @USGSA and @FASCommissioner immediately canceled the company's OneGov deal & removed the company from its Multiple Award Schedule and USAI dot gov. What's next? Expect a six-month phase-out period, according to the president, and a lot of jockeying in industry to fill the AI void Anthropic's apparent ban will open up. defenseone.com/threats/2026/… with @navybook
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Last month: "Dozens of military lawyers have been temporarily assigned as federal prosecutors to support law-enforcement surges...a novel arrangement that is stretching an overworked JAG corps and drawing concern from legal experts.” defenseone.com/policy/2026/0… by @TomNovelly Now:
BREAKING NEWS: U.S. District Court Judge Laura Provinzino has just found a government atty in CIVIL CONTEMPT of COURT for violations of her orders in a habeas case. Attorney cited is Matthew Isihara, a JAG atty from Dept. of War assisting in local US Attorney office @FOX9 (1/)
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Reuters and other media organizations were not allowed to attend or send in questions.
We are proud to lead the most transparent administration in U.S. history. Press briefing at 11 AM.
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Stephen Losey here, president of the Sightline Media Union and air warfare reporter for @defense_news . As of this month, I am also the *last* reporter at Defense News. Following @JenJudson's departure for Bloomberg, Defense News now has... 🧵 1/x
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