curl --request GET \
  --url https://api.example.com/api/intelligence/v1/get-regional-brief

{
  "brief": {
    "regionId": "<string>",
    "generatedAt": 123,
    "periodStart": 123,
    "periodEnd": 123,
    "situationRecap": "<string>",
    "regimeTrajectory": "<string>",
    "keyDevelopments": [
      "<string>"
    ],
    "riskOutlook": "<string>",
    "provider": "<string>",
    "model": "<string>"
  }
}