Dozens explained a bit over here:
https://weare.dozens.com/t/update-in-light-of-sanctions/2345?u=peter
My take is that practicality no one is using Dozens for international payments right now, so this won’t hurt regular customers but will stop individuals opening accounts to try and get around sanctions. It probably also frees up the need for manual effort in both coding exceptions and reviewing for false positives (or negatives).