Scenario description
Assume that by the resolution date, one or more Southeast Asian governments outside Laos formally implements diplomatic, security, military-access, surveillance, or defense-posture measures in response to reported Chinese military activity at Ban Keun, Laos. Qualifying measures may include a formal protest or demarche, new or expanded base-access arrangements with external partners, announced surveillance or patrol deployments focused on Laos/Mekong airspace or approaches, access-control measures affecting military aviation or logistics, or signed defense/procurement actions explicitly linked to the Ban Keun facility or Chinese military presence in Laos. The affected geography is Laos and neighboring or regional Southeast Asian states; exact force levels, procurement volumes, and operating restrictions are not assumed beyond what is publicly implemented.