&gt; It has never happened in the history of the Internet that one top domain organization has undelegated domains under another top domain<p>I also haven&#x27;t heard of such thing. I have heard of few others, though.<p>US had seized a few .com domains, and I doubt they cared about citizenship of registrar.
Russian government had requested un-delegation of few .ru ones, and blocking any access (ISP-level) to many others across the world.
Australian .oz ccTLD was moved to .oz.au.
Yugoslavian .yu ccTLD is gone and doesn&#x27;t exist anymore. It was once feared that .su would also begone, but it had survived for some weird reason, although - who knows - for how long?<p>I think a few email accounts I had registered in early &#x27;00s are long gone, some with the very email providers. But I still have my old private key I&#x27;ve created a decade ago. That&#x27;s what I know about the credentials. YMMV, of course, and - sure - I know a few peers who had lost their keys.<p>&gt; I may assert that I am Barrack Obama<p>Sure, and while I suppose it&#x27;s not your name, I bet there is not a single Mr. Obama in this world. Zooko&#x27;s triange is fine, identity system doesn&#x27;t need unique names - a natural one doesn&#x27;t have those anyway. We don&#x27;t require worldwide login (username) uniqueness, right?<p>If for some reason we want to know it&#x27;s real US President Obama who wrote a message or signed up on a site, we need an assertion on his identity from US Govt, don&#x27;t see any issues with this. And, duh, I bet he has a few tamper-resistant tokens that hold some signed keys, to sign his mail and whatever. I would be very surprised if he doesn&#x27;t.