Amazon API Gateway supports secured connectivity between REST APIs and Amazon Virtual Private Clouds (VPCs) in Middle East (BAH). Customers can now isolate traffic between their Amazon VPCs and REST APIs from the internet using Private API and VPC Link features provided by API Gateway.

from Recent Announcements https://aws.amazon.com/about-aws/whats-new/2019/10/amazon-api-gateway-supports-secured-connectivity-between-rest-apis-amazon-virtual-private-clouds-middle-east/