The Fragmentation Paradox: De-risking Trade and Global Safety

Thierry Mayer, Isabelle Méjean and Mathias Thoenig

Working Papers from CEPII research center

Abstract: We develop a model of international trade and geopolitical disputes, embedding a diplomatic game of escalation to conflict within a quantitative model of trade. Bilateral disputes arise exogenously, and rival countries engage in negotiations to avoid war. In equilibrium, negotiations may fail, resulting in conflict. All welfare-relevant geoeconomic factors, such as the realized costs of war, the concessions to prevent it, and the probability of escalation, depend on the opportunity cost of war, itself shaped by observed trade flows. We provide a simple procedure to estimate these factors in a model of trade calibrated to current data. This approach is then used to quantify the geoeconomic factors characterizing the US-China relationship, both historically and under various ``decoupling'' scenarios. We find that the growing US dependence to Chinese products and markets over the past thirty years has increased the cost of geopolitical disputes with China for the US. In this context, decoupling from China through increased tariffs may offer geopolitical benefits. Yet, the analysis highlights a fundamental security dilemma: because export and import dependencies influence bargaining power in negotiations, decoupling may reduce the diplomatic concessions needed to maintain peace but can paradoxically raise the risk of escalation by weakening incentives for restraint.

Keywords: International Trade; Geopolitical Disputes; Interstate Conflict; Geoeconomics; Fragmentation; Derisking (search for similar items in EconPapers)
JEL-codes: F1 F5 (search for similar items in EconPapers)
Date: 2025-12
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.cepii.fr/PDF_PUB/wp/2025/wp2025-23.pdf (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:cii:cepidt:2025-23

Access Statistics for this paper

More papers in Working Papers from CEPII research center Contact information at EDIRC.
Bibliographic data for series maintained by ().