William J. Perry Lecturer at @StanfordCISAC & Distinguished Fellow at @fpri, host of the @ACWpodcast, member @theNASEM CISAC, ex-ISAB at @StateDep

Half Moon Bay, CA
Thank you for your extremely good-faith criticism. I will give it the attention it deserves.
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24 hours to open source replication. Free coding is going to drain so many moats.
colsto’s aircraft doppler geolocation video is awesome, but doesn't come with code. here's my reimplementation python lib & CLI. curves and harmonics are fit automatically, and all data is free. need to test some more when I have time, but PRs welcome. go nuts.
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Saul Bass is designing garbage trucks now.
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Kim Jong Sik apparently gets to oversee the tests himself now. He's had a good ten years.
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The one thing Donald Trump has been very clear about is that he would not use a nuclear weapon against Iran. (Support @PBS!)
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He's said it repeatedly. I don't know that he could be any more direct.
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Over the past two years, North Korea has almost completely rebuilt the Thaesong Machine Factory (태성기계공장은), its primary facility for the production of liquid propellant rockets. planet.com/compare/?id=thaes…
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The fact that I am so old that this is not just "unclassified" but also "in a museum" is pretty hard to process.
Discovery space shuttle, SR-71 Blackbird and F-117 Nighthawk at @airandspace museum today.
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The same launch footage was released in December 2024 -- although the new release is higher resolution and may have additional scenes.
WATCH: Chinese state broadcaster CCTV has released footage that appears to show a ballistic missile hitting a full-scale mock-up of a U.S. aircraft carrier at a desert test range in Xinjiang. The missile was a DF-26B, the anti-ship variant of the PLA Rocket Force’s Dongfeng-26. The road-mobile DF-26 can carry nuclear or conventional warheads, has a reported range of 3,000–5,000+ km, and is often called the “carrier killer.”
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👇
Chinese anti-ship ballistic missile test hits mock American aircraft carrier built in the Taklamakan desert:
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Actually, it's even older -- I had forgotten that we ripped in January 2019.
Wow, looking at my own archive, that clip dates back to at least 2019 -- @wslafoy uploaded it to our shared drive on January 23, 2019.
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Wow, looking at my own archive, that clip dates back to at least 2019 -- @wslafoy uploaded it to our shared drive on January 23, 2019.
WATCH: Chinese state broadcaster CCTV has released footage that appears to show a ballistic missile hitting a full-scale mock-up of a U.S. aircraft carrier at a desert test range in Xinjiang. The missile was a DF-26B, the anti-ship variant of the PLA Rocket Force’s Dongfeng-26. The road-mobile DF-26 can carry nuclear or conventional warheads, has a reported range of 3,000–5,000+ km, and is often called the “carrier killer.”
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Dr. Jeffrey Lewis retweeted
By the way, latest #stratdela special is devoted to the Chinese hypersonic weapons: 1dkv.substack.com/p/stratdel…
This really does look like a launch of a boost-glide vehicle. (All long-range ballistic missiles are hypersonic.)
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This really does look like a launch of a boost-glide vehicle. (All long-range ballistic missiles are hypersonic.)
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Easy-peasy geolocation of the "Unmanned Aeronautical Technology Development-2026" in Wonsan. Lots of preparations over the past week, including prepared launch revetments for the MLRS launch. planet.com/compare/?id=wonsa…
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One can pretty easily work out where Kim was, where the exhibition hall is, where the launch occurred, etc.
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Per @YonhapNews, ROK JCS says DPRK fired about a dozen SRBMs from Wonsan at ~12:30 pm local, flying ~250 km; a military official says likely KN-25 600mm MRLs. @ModJapan_en reported a “possible BM” at ~12:36 that fell near the Korean east coast.
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