Defense Technology @BerkeleyRisk
Joined January 2020
- Tweets 557
- Following 1,047
- Followers 332
- Likes 2,281
9 Photos and videos
L. Walker retweeted
27 Jun 2025
For @ForeignPolicy I wrote about Iran and why nuclear uncertainty is bad for regional stability (link below). Unclear diplomatic priorities backlash against the IAEA w/in Iran are taking us down a dangerous path.
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L. Walker retweeted
22 Nov 2024
China is bypassing U.S. export controls on GPUs, but how?
In my latest paper, "Whack-a-Chip," we provide the first public evidence of how China is using advances in ML to make old chips useful for SOTA results.
👉🏽 arxiv.org/abs/2411.14425
@areddie89 @berkeley_ai @BerkeleyRisk
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L. Walker retweeted
22 Nov 2024
Delighted to see the latest from @BerkeleyRisk w/ @Ritwik_G and @LPWalkr in the wild. Using the recent release of Tencent's Hunyuan-Large model, the paper begs the question as to whether hardware-oriented #AI #export controls are doing what policymakers want...
22 Nov 2024
China is bypassing U.S. export controls on GPUs, but how?
In my latest paper, "Whack-a-Chip," we provide the first public evidence of how China is using advances in ML to make old chips useful for SOTA results.
👉🏽 arxiv.org/abs/2411.14425
@areddie89 @berkeley_ai @BerkeleyRisk
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L. Walker retweeted
24 Oct 2024
A few takeaways from my recent piece for @carnegienpp about the risks of a more opaque Iranian nuclear program (and some cautionary lessons from the Iraqi experience)
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L. Walker retweeted
24 Oct 2024
For @CarnegieEndow I wrote about the perils of nuclear ambiguity, and what Iran (and the world) can learn from the saga of Iraq's nuclear program. TLDR: playing political football with international oversight rarely ends well for anyone: carnegieendowment.org/resear…
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L. Walker retweeted
30 Sep 2024
Bigger isn’t better, but major AI policies (like the Biden EO) focus only on model size & compute. However, models are useless without data! In our latest work, we highlight the need for data-centric AI policy and reveal the shortcomings of the status quo. arxiv.org/abs/2409.17216
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L. Walker retweeted
30 Aug 2023
Thread 📜 OTD in 1963, the US and Soviet Union established the "Washington–Moscow Direct Communications Link" or hotline. At the time, the @Guardian reported that this step would be a "small, but useful, measure of arms control" especially in light of the #CubanMissileCrisis.
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L. Walker retweeted
19 May 2023
As the G-7 convenes in Hiroshima this weekend, I wrote a piece for @ForeignPolicy about the city's enduring message—and the country's challenging security environment.
foreignpolicy.com/2023/05/19…
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L. Walker retweeted
7 Apr 2023
Can't wait for this conversation with some of the best and brightest in the #AI-#cyber and #governance communities from @StanfordCISAC @Google @OpenAI @Anthropic on the sidelines of @RSAConference and sponsored by @BerkeleyRisk and @UNIDIR. Join us on April 24!
7 Apr 2023
On April 24 join us for our RSA side event with @UNIDIR and @swissnexSF. The event, “Governing the Cyber AI Nexus,” will feature @GPersiPaoli, @areddie89, @mlfavaro, Elaine Korzak, @SarahShoker, and Irene Giannoumis. Register now: eventbrite.com/e/governing-t…
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L. Walker retweeted
31 Mar 2023
New from BRSL's @areddie89 : "Why the alarm over Russia’s use of hypersonic missiles in Ukraine is misplaced". Dr. Reddie examines the two types of alarmism in the response to the recent Russian use of hypersonic Kinzhal missiles in Ukraine. Read it now: thebulletin.org/2023/03/why-…
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L. Walker retweeted
28 Feb 2023
📣 NEW: With support from @StateDept's Bureau of Arms Control, Verification, and Compliance, we're releasing the product of a year's worth of research into the strategic stability risks posed by integrating AI into NC3.
securityandtechnology.org/vi…
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L. Walker retweeted
13 Dec 2022
The Office of Strategic Capital @DeptofDefense was established this month to boost defense-tech investment. IST’s @LPWalkr & Alexa Wehsener write, “the true test of the well-intentioned office will be whether it has sufficient impact on the American innovation ecosystem.”
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A new piece from Alexa Wehsener and I, where we discuss the implications of the new Office of Strategic Capital:
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L. Walker retweeted
17 Oct 2022
The NSS mentions enhanced crisis communications with China - good! But it's also been a longtime priority that has thus far failed to have regular impact.
Check out which 🇺🇸🇨🇳 links have been attempted in @LPWalkr and my "Atlas of Crisis Comms": securityandtechnology.org/wp…
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L. Walker retweeted
31 Aug 2022
Over the last month, team IST participated in #NPTRevCon, joining international efforts to reduce the risk of nuclear conflict. 1/8
securityandtechnology.org/bl…
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L. Walker retweeted
16 Aug 2022
Last Monday @IST_org’s @LPWalkr joined a #NPTREVCON side event hosted by @UNIDIR, @BASIC_int, and the Dutch and Swiss governments focused on taking forward risk reduction.
media.un.org/en/asset/k1y/k1…
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L. Walker retweeted
8 Aug 2022
On crisis communications links:
"As critical as communications are to ending a conflict, it is often the first thing to be targeted at the outset of one. If there are not robust avenues in which to negotiate, you may find yourself going without." @LPWalkr #NPTRevCon
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L. Walker retweeted
8 Aug 2022
In just one hour: watch online or join in person the Taking Forward Nuclear Risk Reduction Side Event. @IST_org is thrilled to partake in this event, with @UNIDIR, @BASIC_int, and the Govts of The Netherlands and Switzerland.
unidir.org/events/npt-side-e…
🔔Reminder that our #NPTRevCon side event is next Monday!🚩
🤝Co-organized with @basic_int, @ist_org and the Govts of 🇳🇱The Netherlands and🇨🇭Switzerland;
🎙️Opening remarks by Dir. Robin Geiss and @RobGabrielse, followed by a great line up of experts!
🔗unidir.org/events/npt-side-e…
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L. Walker retweeted
8 Aug 2022
The event will discuss how to further nuclear risk reduction, taking advantage of new political and technological opportunities. @IST_org’s @LPWalkr will take part in the discussion, touching on nuclear crisis communications and the role they can play in reducing nuclear risk.
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