Example policy: Deny sending events from specific Regions in Amazon EventBridge

The following example policy attached to an event bus named CrossRegionBus in account 123456789012 grants permission for the event bus to receive events from the account 111122223333, but not events that are generated in the US West (Oregon) Region.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "1AllowAnyEventsFromAccount111112222333",
      "Effect": "Allow",
      "Principal": {
        "AWS": "arn:aws:iam::111112222333:root"
      },
      "Action": "events:PutEvents",
      "Resource": "arn:aws:events:us-east-1:123456789012:event-bus/CrossRegionBus"
    },
    {
      "Sid": "2DenyAllCrossRegionUSWest2Events",
      "Effect": "Deny",
      "Principal": {
        "AWS": "*"
      },
      "Action": "events:PutEvents",
      "Resource": "arn:aws:events:us-east-1:123456789012:event-bus/CrossRegionBus",
      "Condition": {
        "ArnEquals": {
          "aws:SourceArn": [
            "arn:aws:events:us-west-2:*:*"
          ]
        }
      }
    }
  ]
}