>It’s based on very weak logic, but perhaps “Jia Tan” rules out China. The Stasi sometimes used real names for cover names as well so you could draw no conclus

>It’s based on very weak logic, but perhaps “Jia Tan” rules out China. The Stasi sometimes used real names for cover names as well so you could draw no conclusions at all from a fake identity, not even by process of elimination. At the end of the day I don't think you can infer anything from the names or geolocations involved.