In his report, Aaron Stein details how there is serious discussion in Russia about developing military weapons to disable US satellite constellations, reviving a countermeasure framework that Russia has long adopted against US space technology.

Taking LEO Off the Board: Russian Thinking About Anti-Satellite Warfare - Foreign Policy Research Institute

The Soviet Union and Russia have invested in anti-satellite weapons to ensure that their nuclear deterrent remains credible. For both the Soviet Union and

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FPRI hosted a wargame with participants joining from around the world. The TTX simulated nuclear escalation dynamics in space, following credible reports of Russia deploying nuclear weapons into orbit. Thank you to our participants for embodying the spirit of the game and making it a success.

Colleagues from around the world joined us @fpri.bsky.social in Philadelphia for a TTX to study nuclear escalation dynamics in space. Thanks to @slair.bsky.social @duitsmanms.bsky.social @armscontrolwonk.bsky.social and Emily Holland for support. Game report coming soon!

Wrote up a short Substack on my way back from Philadelphia, where I had a good time in a space-nuclear table-top today hosted by @aaronstein1.bsky.social, @slair.bsky.social, and team. On salvage fuzes! panda.substack.com/p/salvage-fu...

Salvage Fuzing and Co-Orbital Nuclear Weapons

Why destroying a possible Russian co-orbital nuclear anti-satellite weapon probably isn’t a good idea.

panda.substack.com

Take a look at the second issue of the #OrbisJournal, focusing on the second nuclear century. The authors each explore a critical element of the nuclear domain shaping the international system. Special thanks to Rachel Whitlark for all her hard work spearheading this issue. buff.ly/iso1dit

My latest report for @fpri.bsky.social with colleagues @slair.bsky.social and @armscontrolwonk.bsky.social

Foreign Policy Research Institute@fpri.bsky.social · 2w ago

🆕 Nothing New Under the Golden Dome by Sam Lair, Jeffrey Lewis, and Aaron Stein. The authors developed a model to tailor interceptor satellite constellation size to various adversary missile threats and estimate the cost of those constellations. Click below to read their conclusions.

In his latest analysis piece, @duitsmanms.bsky.social explains how a coming US-Saudi Arabia nuclear agreement poses significant proliferation risks, as it allows Saudi Arabia to enrich uranium, in exchange for US nuclear reactors—which the US is not in a position to deliver. Read more below.

The US-Saudi Nuclear Deal: Abandoning the Gold Standard - Foreign Policy Research Institute

Donald Trump is famous for his love of gold. His agreement with Saudi Arabia, however, has undermined the so-called “Gold Standard” for nuclear

fpri.org

The proclamation of the Zeitenwende marked a clear step forward, but key questions remain regarding how that vision translates into long-term policy and proactive leadership on NATO’s Eastern Flank.

🗓️ In-Person Event | Thursday, September 17 | 5:00 - 6:30 PM In the wake of shifting geopolitical realities, the debate surrounding Germany’s military readiness, industrial capability, and strategic leadership has taken center stage. More details below ⬇️

Zeitenwende in Action: Germany’s Future Role in NATO Security - FPRI Events

For decades, Germany’s position in NATO was defined by a delicate balance: serving as a reliable alliance partner while exercising diplomatic restraint and

fpri.org

⏰️ Tuesday, September 8 | 5:00 PM Aaron Stein and Sam Lair will host an in-person discussion on the cost of proposed satellite constellations under the Golden Dome Program—an enduring source of debate around space-based interceptors—and their potential consequences. Register here: buff.ly/Wd14UmG.

Nothing New Under the Golden Dome - FPRI Events

Aaron Stein and Sam Lair will discuss their forthcoming FPRI report on the cost and consequences of proposed space-based interceptor satellite constellations

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When you’re out cycling and then get a gentle reminder to check out the latest issue of @fpri.bsky.social Orbis. 😅

I return to the Arms Control Wonk Podcast to talk Golden Dome and SBIs with @aaronstein1.bsky.social and @armscontrolwonk.bsky.social Come for our explanations of math, stay to hear what everyone's favorite SBI countermeasure is! www.armscontrolwonk.com/archive/1222...

The blogfather @armscontrolwonk.bsky.social and I sat down with @fpri.bsky.social fellow @slair.bsky.social to discuss our joint research on the actual cost of space based interceptors and this layer of Golden Dome. We thank New-Land Foundation for support. www.armscontrolwonk.com/archive/1222...

I am hiring a Research Associate to join my team at Scholars at Risk: apply.interfolio.com/191007. Great way to get started in international human rights work, particularly if you have an interest in academic freedom

The report by @aaronstein1.bsky.social examines Soviet and now Russian thinking about war in space, the investments made to hold at risk US assets in orbit, and how US private sector advancements are pushing the Russians to consider deploying nuclear weapons in space. buff.ly/N45n4cy

Taking LEO Off the Board: Russian Thinking About Anti-Satellite Warfare - Foreign Policy Research Institute

The Soviet Union and Russia have invested in anti-satellite weapons to ensure that their nuclear deterrent remains credible. For both the Soviet Union and

buff.ly

🚨 Job Alert: We’re hiring for a research assistant at @carnegienpp.bsky.social. Come work with me and the rest of the team. Details below; apply by the 18th of August: carnegieendowment.applicantpro.com/jobs/4169113

Research Assistant, Nuclear Policy Program - Washington, DC

Research Assistant Nuclear Policy Program The Carnegie Endowment for International Peace, a renowned international affairs institution, seeks a full-time research assistant to support its Washington, ...

carnegieendowment.applicantpro.com

The quest to leverage space for warfighting has continued. How has Russia adapted its strategy to the domain, and what does it mean for US defense planning and investment? Click the link below to find out more from @aaronstein1.bsky.social.

Taking LEO Off the Board: Russian Thinking About Anti-Satellite Warfare - Foreign Policy Research Institute

The Soviet Union and Russia have invested in anti-satellite weapons to ensure that their nuclear deterrent remains credible. For both the Soviet Union and

fpri.org

Really great read from @fpri.bsky.social @slair.bsky.social @duitsmanms.bsky.social

Foreign Policy Research Institute@fpri.bsky.social · 2mo ago

🆕 Lida Shuffle: Su-25 “Nuclear” Exercises in Belarus by Michael Duitsman www.fpri.org/article/2026...

More jobs @fpri.bsky.social! Our Eurasia and Asia teams are looking to expand and hire a part-time RA/EA to support our awesome work. Apply to join our growing team. www.fpri.org/about/employ...

Career Opportunities - FPRI

FPRI is committed to considering a broad array of candidates, including those with diverse work experience and backgrounds. All qualified applicants will

fpri.org

My colleague @armscontrolwonk.bsky.social and I discussed on our podcast the history of our now decade-and-half old show, his future, my future, and our major plans for 2027 and beyond www.armscontrolwonk.com/archive/1222...

Happy National Intern Day!🎉 Thank you to all of our summer and 2026 interns for supporting our fellows and staff. Read more about the internship program on our website. buff.ly/eFf8GoJ

Russian nuclear-armed submarines have long operated under the protection of thick Arctic sea ice, but as it melts away, Carl Parkin breaks down the challenges they face.

A Crown Jewel in Peril: Russia’s Arctic Aggression Masks Nuclear Vulnerability - Foreign Policy Research Institute

Russia sees opportunity in the Arctic. For centuries, ever-present sea ice has made the region hostile to trade or military exploitation. But as the ice

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First our OSINT team, now LeBron. It’s been a good week for Philly. @fpri.bsky.social

It's my first anniversary at @fpri.bsky.social today! I'm enormously grateful to the whole team for being so consistently supportive and encouraging - and particularly to @aaronstein1.bsky.social for giving me the opportunity to be a big nerd. You guys are the best!

Top Gun Maverick Iceman Bro Hug

ALT: Top Gun Maverick Iceman Bro Hug

static.klipy.com

Some news! As many of you know, I've been a Distinguished Research Fellow at @fpri.bsky.social consulting with @aaronstein1.bsky.social on space and missile defense. Today it gets much better: the whole freaking open-source research team is joining FPRI full time. (1/4)

For those on the West Coast. We have big news @fpri.bsky.social 👇

Aaron Stein@aaronstein1.bsky.social · 2mo ago

We have big news at @fpri.bsky.social! For almost a year now @armscontrolwonk.bsky.social and I have been collaborating on a series of projects about deterrence, space, and missile defense. Last week, we made it official. Jeffrey's all-star team is starting full time at FPRI.

We have big news at @fpri.bsky.social! For almost a year now @armscontrolwonk.bsky.social and I have been collaborating on a series of projects about deterrence, space, and missile defense. Last week, we made it official. Jeffrey's all-star team is starting full time at FPRI.

China just conducted a rare open-ocean test of its JL-3 submarine-launched ballistic missile. Why does that matter? What does it tell us about China’s sea-based nuclear deterrent, targeting, and strategic signaling?

If you missed our virtual book talk, watch the discussion on our YouTube channel. The authors of "Moscow's Mercenaries" detailed the Wagner Group's functions, the intense political drama surrounding the Group and the death of its founder, Yevgeny Prigozhin, and more.

Moscow’s Mercenaries: The Rise and Fall of the Wagner Group

FPRI’s Eurasia Program Director Dr. Emily Holland hosted a book talk marking the release of Moscow’s Mercenaries: The Rise and Fall of the Wagner Group with authors Christopher M. Faulkner, Raphael…

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Such a blast a write this with Aaron and to feature in Aviation Week!! Really thrilled!

Aaron Stein@aaronstein1.bsky.social · 2mo ago

my @fpri.bsky.social colleague @slair.bsky.social and I wrote about how Golden Dome may hasten the burgeoning nuclear arms race in space for @aviationweek.bsky.social aviationweek.com/space/satell...