What it captures
Trade-restriction instruments imposed by one Southeast Asian state against a neighbour during an active border/security conflict, executed via head-of-government or ministerial direction rather than a formal trade-remedy investigation. The 2025 Cambodia-Thailand crisis is the founding case: import halts on both fuel/gas and agricultural goods, paired with unilateral border-checkpoint closures, deployed as leverage alongside military mobilisation following the killing of a Cambodian soldier in the disputed Emerald Triangle area.
Why it matters
ASEAN intra-regional trade (~20%+ of total trade) is far deeper than South Asia's (~5%), which makes conflict-driven bilateral suspensions here structurally unusual and higher-stakes for regional supply chains — Thailand's PTT alone stood to lose an estimated USD 1.5 billion, 2.3 billion-litre annual fuel export market. Distinct from the South Asia cluster's persistence pattern (India-Pakistan measures have outlasted multiple ceasefires by years), it is an open question whether Southeast Asian conflict-driven trade suspensions prove similarly sticky once the precipitating military crisis resolves.
Pattern to watch
Whether Thailand imposes reciprocal restrictions on Cambodian exports; whether the fuel/gas and agricultural import halts persist past the mid-2025 ceasefire negotiations or are quietly wound down; and whether this becomes a repeatable playbook in other ASEAN border disputes (e.g., Thailand-Myanmar, Indonesia-Malaysia maritime boundary frictions).