Chelsey Wiley

R&D & Nat Sec Content Manager @AIAA | Former @IISS_org @RUSI_org @ukponi | MSc Security Studies @uclspp | BA Intl Relations @franklinswitz | views are my own

[Aerospace America @AeroAmMag]

NASA’s first crewed lunar mission in over 50 years began today when the towering SLS rocket lifted off at 6:35 p.m. Eastern, leaving behind a thick, white plume as it ascended into the blue sky over Cape Canaveral and disappeared over the Atlantic.
https://t.co/9bRJNuhGaV

[EU Non-Proliferation and Disarmament @EU_NonProlif]

📚Understanding the strategic risks surrounding the Iran crisis

As tensions escalate between Iran, Israel and the United States, the implications extend far beyond the immediate confrontation. The crisis raises broader questions about nuclear proliferation, missile threats and regional escalation, with potential consequences for global strategic stability.

In recent months, the International Institute for Strategic Studies (@IISS_org) has published a series of analyses exploring these dynamics.

🔎 Recent 2026 publications highlight several key dimensions of the evolving strategic landscape, including the risks surrounding Iran’s nuclear programme (Daniel Salisbury ), the role of missile-warning capabilities in European security (Giorgio Di Mizio), crisis-management simulations related to nuclear security (@morgmichaels, @EvanLaksmana), and the development of new missile capabilities shaping regional deterrence dynamics (Karl Dewey, @wiley_chelsey, @JosephHDempsey).

➡ Explore the latest analyses from IISS:
https://t.co/OsOsrB3UaE

#Iran #MiddleEast #NonProliferation #MissileDefence #ArmsControl #Geopolitics #InternationalSecurity #EUNPDC

[IISS News @IISS_org]

India’s September 2025 test of a nuclear-capable ballistic missile from a rail-based launcher illustrates ongoing interest in a mobile force design that others have experimented with and deployed previously.

Read the latest analysis by @KarlDewey1, @wiley_chelsey and @JosephHDempsey:

➡️ https://t.co/ytdevGCNmD

[IISS News @IISS_org]

Following a Russian DA-ASAT test in 2021, there has been an increased requirement to implement low Earth orbit (LEO) collision avoidance, including for the International Space Station.

Read the IISS report and find out more: https://t.co/zewkKiRayw

[IISS News @IISS_org]

After coordinated Israeli and US strikes on Iran’s nuclear infrastructure, it remains to be seen if and how quickly Iran can rebuild. While the attacks were disruptive, they did not succeed in destroying key facilities, thereby allowing Iran to resume its nuclear ambitions.

Read the latest analysis by @wiley_chelsey and Alexander K. Bollfrass:

➡ https://t.co/DfMqxB3R5u

[IISS News @IISS_org]

The contested, congested and competitive nature of the space security ecosystem has prompted European spacefaring nations to reevaluate their military space strategies and capabilities.

✏️ @alexbollfrass, @Ester_Sab1 & @wiley_chelsey

Find out more. https://t.co/yI22xkh97L

[Chelsey Wiley @wiley_chelsey]

Read our latest report on the state of military space programs and capabilities in the European theatre👇

[IISS News @IISS_org]

Individual national space capabilities are growing in response to national military operational needs and threat perceptions informed by the lessons from the war in Ukraine.

✏️ @alexbollfrass @Ester_Sab1 & @wiley_chelsey

Read the IISS’ latest research report here. https://t.co/tY3naiXRjG

[Victoria Samson @VSamson_DC]

"The Andøya Spaceport is centrepiece in the Technology Safeguards Agreement signed by US and Norwegian authorities." & "In addition to the Spaceport, Andøya is site for a new Norwegian-US Arctic satellite station against enemy cruise missiles"

https://t.co/m9A1jvvH5r

[Chelsey Wiley @wiley_chelsey]

US deterrence and defence of #AsiaPacific allies will necessarily need to uphold a delicate balance of which collective defence arrangements assure allies and which are dangerously escalatory to further tenions (8/8)

[Chelsey Wiley @wiley_chelsey]

In my latest article, I discuss what Trump's national security picks could indicate for extended #deterrence policies with #Japan and #SouthKorea 🧵 (1/8) https://t.co/yYu6Ry478d

[Chelsey Wiley @wiley_chelsey]

Looking forward, will the US show willingness to defend them in a worst-case scenario where Washington faces a dual-front contingency? (7/8)

[William Alberque @walberque]

China want dialogue based on respect - a common demand for them - and "common, comprehensive, cooperative and sustainable security," and "respect each other's sovereignty, security and development interests."

That's diplo-speak for don't do or tell us anything we don't like. 3/4

[Chelsey Wiley @wiley_chelsey]

https://t.co/MD6FPK0sQP

[Nuclear Memes for Atomic Teens @NuclearMemes]

Biden really dropped the #NuclearPostureReview in the middle of #nukecon

[William Alberque @walberque]

Just had a great discussion with one of my journalist friends about Iran's sale of missiles and drones to Russia. I think the only explanation that really makes sense is that those inside Iran that do not want the nuclear deal have found a guaranteed way to prevent it. 1/2