Moving Beyond the Grey Zone: Evidence-Based Policy for Maritime Security in the Taiwan Strait (Part I)
Policy Paper by Jérôme Gapany
This two-part policy paper examines how evolving patterns of maritime activity in and around the Taiwan Strait create escalation risks, and how Taiwan authorities can respond with clearer concepts and more systematic evidence.
Part I suggests that the increasingly elastic use of “grey zone” as a catch-all label makes it harder to distinguish between different types of pressure at sea, their indicators and appropriate responses. As an alternative working lens, the paper uses “maritime coercion”, which is the sustained use of non-war maritime activities to influence another actor’s choices through pressure or disruption, while remaining short of open conflict. Viewed this way, the Strait appears as a setting of cumulative risk rather than isolated crises. Large-scale exercises, the expanded influence of Chinese Coast Guard authorities, the growing role of militia-type actors and recurrent disturbances affecting subsea cables and other infrastructure all add friction, uncertainty and room for misreading intent. Managing this environment requires the ability to tell routine activity from meaningful change in posture, to connect observable patterns to proportionate, non-escalatory responses, and to communicate facts credibly to domestic and external audiences.
Part II, therefore, advances a practical, evidence-led agenda centred on a “Taiwan Maritime Transparency Hub” (TMTH) that would draw together incident data from defence, coastguard and infrastructure operators under common templates and validation rules. It also outlines how a clearer domestic evidence base could feed into status-neutral channels, both regionally and internationally. In combination, the following policy recommendations are intended to make well-documented incidents, rather than contested narratives, the organising principle for how Taiwan tracks maritime risks, calibrates its responses and contributes to wider regional resilience.
Download the policy paper by Jérôme Gapany (PDF)