Once again you are argue ing at cross purposes
The CBR assets discussed are Central Bank assets, not private assets - you discuss 'how do you assure the wealthy', so I assume you refer to private assets
The answer is you, in fact the ECB, Euroclear, or the EUC, do not ‘assure the wealthy’, they do not have to
Instead - these insitutions do communicate with Sovereign funds, Central Banks and so on, providing private reassurances as well as all sorts of documents showing how it is impossible to confiscate, while seizure is temporary
In turn the ruling class in these outside to EU countries receive some reassurance, but no guarantees, that are pertinent, hardly all encompassing, but adequate – no large withdrawals have been made, as far as I know
This suits everyone - the EU institutions obviously, the outside EU Central Banks, Sov F, can reassure their oligarchs, and tell them let us handle this for you, the EU and the overseas ruling class thereby each preserve cohesion and solidarity
(except for the power struggle between the EU countries Central Banks and the EU C or ECB, and in turn these struggle of all of these with the US Central Bank and Wall Street)
The ruling class everywhere faces everywhere the same problem, how to extract the maximum of wealth from the remainder of society and concentrate this in the fewest of their hands
As such oligarchs central bankers, the rich - all over the world- will be willing to learn from this EU initiative
It is necessary to be precise, to investigate, and to analyse
Please remember the US has been confiscating foreign owned assets, CB or/plus private for some time without problem, although, thanks to the Russians, it'd be fair to say they're all thinking twice nowadays, about this as well as everything else in their business model