Require MFA IAM Policy

mustMFA.json

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Action": [
                "iam:CreateVirtualMFADevice",
                "iam:ListVirtualMFADevices",
                "iam:DeactivateMFADevice",
                "iam:DeleteVirtualMFADevice",
                "iam:EnableMFADevice",
                "iam:ResyncMFADevice",
                "iam:ListMFADevices"
            ],
            "Resource": [
                "arn:aws:iam::<AccountID>:mfa/${aws:username}",
                "arn:aws:iam::<AccountID>:user/${aws:username}",
                "arn:aws:iam::<AccountID>:mfa/"
            ],
            "Effect": "Allow",
            "Sid": "AllowIndividualUserToManageTheirMFA"
        },
        {
            "NotAction": "iam:*",
            "Resource": "*",
            "Effect": "Deny",
            "Condition": {
                "Null": {
                    "aws:MultiFactorAuthAge": "true"
                }
            },
            "Sid": "DoNotAllowAnythingOtherThanAboveUnlessMFAd"
        }
    ]
}