Playing a Short Game: A Review of Mamun's "Strategic Interplay in a Fragmenting Trade Order: A Game-Theoretic Design for the Next 18–36 Months"

This review examines Dr. Syed Muntasir Mamun’s working paper “Strategic Interplay in a Fragmenting Trade Order: A Game-Theoretic Design for the Next 18–36 Months” (KSCCN Working Paper Series, Vol. V, 2026). The paper models the interaction of four classes of actors in the global trading system: structurally constrained smaller economies, large surplus economies, large deficit or market-access economies, and coalition entrepreneurs. It treats their interaction as a finitely repeated game with incomplete information, identifies several candidate equilibria ranging from fragmentation and competitive devaluation to balanced-trade clubs and connectivity coalitions, and derives time-phased recommendations for smaller economies. The review identifies three strengths: a clear and economical structure of players, strategies and contingent payoffs; the insight that a short, finite horizon makes reputation and early credible moves more important than long-run punishment strategies; and the translation of the model into a sequenced roadmap. It then raises four points for further discussion: the step from a stylised design to demonstrated results; the aggregation of governments and firms within a single player type; the self-containedness of key concepts such as the Traction Index; and the basis for judging which equilibrium is most likely. It closes with broader implications for research, business and teaching.