Pierre Rousseaux
@pierrerousseaux.bsky.social
300 followers 160 following 56 posts
PhD candidate at CREST (Ecole Polytechnique, ENSAE) | Research affiliate at Institut des Politiques Publiques (IPP) | Director, founder and editor in chief of Oeconomicus Website: pierrerousseaux.com Journal: oeconomicus.fr
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pierrerousseaux.bsky.social
👋It’s been a while! The dynamic on X left little choice…

For this new/first post, I’ll summarize the key insights from my first published paper🎉, with Isabelle Mejean in the Paris Report @cepr.org @bruegel.bsky.social, edt by @pisaniferry.bsky.social, B. Weder di Mauro & @jzettelmeyer.bsky.social👇
pierrerousseaux.bsky.social
✅ On this page, you’ll find:
- A methodology to identify vulnerable products and quantify trade dependencies
- Analysis of strategic risks: geopolitical tensions, supply chain disruptions, reliance on critical technologies.
- Discussion on policy levers to mitigate these vulnerabilities
pierrerousseaux.bsky.social
📌 Why is this crucial?
➡️ Over-reliance on suppliers weakens supply chains, especially when EU production capacity is limited.
➡️ Some products are critical for the EU’s industry and sovereignty, particularly in energy transition and strategic infrastructure.
pierrerousseaux.bsky.social
🔎 My new page delves into these issues, based on our @cepr.org @bruegel.bsky.social publication with Isabelle Mejean (Paris Report 2, ed. @pisaniferry.bsky.social @jzettelmeyer.bsky.social @wederdim.bsky.social ) and my contribution to the @eib.org's Investment Report 2024/2025.
pierrerousseaux.bsky.social
📉 The EU heavily relies on imports for critical goods: raw materials, industrial components, green tech…
Which products and sectors are most vulnerable?
What risks do these dependencies pose to competitiveness and sovereignty?
pierrerousseaux.bsky.social
🌍 Europe’s trade dependencies: a new interactive page to explore them!
In a world of rising geopolitical tensions, the EU’s economic resilience is more crucial than ever.
🔗 Explore here: www.pierrerousseaux.com/eu-trade-dep...
#InternationalTrade #Resilience #EU #PublicPolicy #TradeDependencies
Pierre Rousseaux - EU trade dependencies
What can you find on this page? This page is mainly based on the paper Mejean and Rousseaux (2024), which is the third chapter of the Paris Report 2 by CEPR and Bruegel, titled Europe’s Economic Secu...
www.pierrerousseaux.com
pierrerousseaux.bsky.social
🌍 L’économie au service de la planète : comprendre, agir, évaluer
🏦 Est-ce que ma banque peut faire faillite ?
⛽ Pourquoi le prix du pétrole varie-t-il autant ?
🦄 Qu’est-ce qu’une licorne ?
🤖 Est-ce que l’IA va nous mettre au chômage

@cnrs.fr @crestumr.bsky.social
pierrerousseaux.bsky.social
➡️ Loin d’être une ennemie de l’écologie, l’économie (dans sa méthodologie et ses outils de recherche) en est une alliée précieuse, à condition d’en faire bon usage.

📝 Retrouvez l'ensemble des mes articles disponibles dans la collection “2 minutes pour comprendre” (www.citeco.fr/rubriques/2-...) :
2 minutes pour comprendre | Citéco
Découvrez "2 min pour comprendre" Découvrez notre nouvelle série de vidéos pédagogiques, "2 min pour comprendre", qui vous plonge au cœur des questions économiques, sociétales et d'actualité les plus ...
www.citeco.fr
pierrerousseaux.bsky.social
📊 Modéliser les effets futurs du réchauffement et des politiques (ex : modèle DICE de Nordhaus)
🧰 Agir, avec des outils économiques : taxe carbone, quotas, subventions, nudges, finance verte, banque centrale du carbone
📏 Évaluer ce qui fonctionne vraiment (DiD, RDD, RCT) – et à quel coût
pierrerousseaux.bsky.social
💡Dans cet article, je propose une synthèse (accessible mais la plus précise possible) de quelques outils et idées économiques mobilisables pour faire face à la crise écologique :

🔎 Comprendre les causes et les trajectoires des émissions de gaz à effet de serre
pierrerousseaux.bsky.social
👇Nouvel article pour Cité de l’Économie👇

🌍Souvent perçue comme la « science de l’argent », l’économie est aussi un puissant levier pour comprendre le dérèglement climatique, concevoir des politiques publiques efficaces, et en évaluer les impacts."
www.citeco.fr/leconomie-au...
L’économie au service de la planète : comprendre, agir, évaluer | Citéco
Rédigé par Pierre Rousseaux, doctorant en économie au CREST (CNRS, Ecole Polytechnique, GENES) et Président cofondateur et rédacteur en chef d’Oeconomicus
www.citeco.fr
pierrerousseaux.bsky.social
📌 These trade dependencies are not just an economic issue—they have direct implications for the EU’s industrial and technological sovereignty.

@crestumr.bsky.social @ipparis.bsky.social @polytechniqueparis.bsky.social
pierrerousseaux.bsky.social
🔍 Why does this matter?

📌 Accurately identifying these dependencies and their risks is crucial to designing efficient policies, such as supplier diversification, reshoring, and strategic investments. A focus on specific policies here: drive.google.com/file/d/1LA-8...
MejeanRousseaux_ITCEI.pdf
drive.google.com
pierrerousseaux.bsky.social
➡️ These vulnerabilities persist over time ⏳: 41% of trade dependencies identified before the global financial crisis persisted immediately after, and 35% remained in the long run. This highlights their structural nature and the difficulty of reducing them.
pierrerousseaux.bsky.social
➡️ Some dependencies are structurally critical for European industry 🏭: The most vulnerable products are concentrated in chemicals, metals, and ceramics, industries that are essential for many strategic sectors.
pierrerousseaux.bsky.social
➡️ Upstream trade dependencies are the riskiest ⚠️: Vulnerabilities occurring more than three stages before the final consumer account for 49% of critical products. Disruptions in these segments could severely impact European supply chains.
pierrerousseaux.bsky.social
➡️ Trade vulnerabilities are increasingly concentrated on Chinese imports 📈: China’s share in the EU’s trade dependencies has risen, while the share of the US and the rest of the world has decreased by 3 to 10 percentage points.
pierrerousseaux.bsky.social
✅ High concentration of suppliers outside the EU
✅ Very low domestic production within the EU
✅ Very limited substitution possibilities between suppliers in case of shocks
pierrerousseaux.bsky.social
➡️ Out of 5,381 products imported by the EU27, the # of vulnerabilities fluctuates between 359 (large criteria) and 29 (using the most restrictive methodology with our five criteria developed with Isabelle). This small number does not mean low risk, these are strong vulnerabilities characterized by:
pierrerousseaux.bsky.social
🔎 My contribution to the @eib.org's report explores these questions over a longer time horizon than our @cepr.org paper with Isabelle Mejean.

💡Here are my key findings:
pierrerousseaux.bsky.social
📢Check out my contribution to the @eib.org's Investment Report 2024/2025 (Box C,Ch. 5)

🌍Rising geopolitical tensions make the EU’s trade dependencies a key strategic issue. Which dependencies and sectors are most vulnerable? How can the EU strengthen its resilience?
drive.google.com/file/d/1SQE6...
EIBInvestmentReport_boxC_Chap5.pdf
drive.google.com
Reposted by Pierre Rousseaux
ippofficial.bsky.social
🚨L'IPP recrute des économistes seniors et juniors F/H pour la rentrée de septembre 2025
📅 Date limite de candidature : 30/03/2025
▶️ Pour consulter les offres et candidater : www.ipp.eu/presentation...
pierrerousseaux.bsky.social
💸💥 Et si ma banque faisait faillite ? Entre mythe, réalité et protections modernes. Retrouvez mon dernier article pour la Citéco (Cité de l'Économie)👇

…. pour répondre à cette question j’effectue quelques détours théoriques, historiques, puis réglementaires !

www.citeco.fr/est-ce-que-m...
Est-ce que ma banque peut faire faillite ? | Citéco
Rédigé par Pierre Rousseaux, doctorant en économie au CREST (CNRS, Ecole Polytechnique, GENES) et Président cofondateur et rédacteur en chef d’Oeconomicus
www.citeco.fr
Reposted by Pierre Rousseaux
voxeu.org
Xavier Jaravel finds that a substantial number of individuals in the #US considered above the #poverty line based on the official CPI actually fall below it due to different #inflation dynamics, and may be missing out on poverty alleviation programmes.
cepr.org/voxeu/column...
#EconSky
Differences in consumption patterns between lower- and higher-income households suggest the potential for inflation inequality, but evidence on the scale and drivers of this disparity remains scarce. This column uses ‘distributional consumer price indices’ to reveal a clear and systematic gap in inflation rates across income percentiles in the US, reflecting the varying consumption patterns of households at different income levels. The findings suggest that a substantial number of individuals considered above the poverty line based on the official Consumer Price Index actually fall below it due to different inflation dynamics, and may be missing out on poverty alleviation programmes.
pierrerousseaux.bsky.social
🗓️ Rdv ce samedi à 15h à la Citéco (Cité de l'Économie) pour assister à une conférence sur les inégalités et discriminations dans l’emploi, aux côtés de Dominique Meurs et @rolandrathelot.bsky.social

✅ Entrée gratuite : tickets.citeco.fr/fr-FR/mes-bi...

@crestumr.bsky.social @ipparis.bsky.social