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They are sanctioned from using the Dollar, but they are still required to pay their debts in Dollars? Wouldn't that make the lender, for receiving payments from Russian companies/financial institutions, be breaking U.S. orders under the sanction? I believe the U.S. have also sanctioned Russian Gold.
My viewpoint truly is, I believe the sanction might hurt the Dollar more in the future, because other nation-states might start losing trust in the cabal behind the U.S. Dollar.
The sanction against using the dollar is more theoretical, the actual way it works is that they can't issue more debt in dollars nor can they ask for financing through most financial systems. But nobody is stopping them to pay from their bank's accounts to some bank in China 1 billion dollars, that's why I told you on the other topic, sanctions don't work by chopping somebody's hand off so he can't play tennis anymore, it's more like nobody wants to play tennis with him at all.
Plus Russian companies' debt and governmental debt can't be sanctions since it's actually not theirs anymore, for example, if the IRS would seize all your goods and funds and bank accounts, they won't cancel your mortgage, that would still be up and running.
As for the second part, I don't know how old you are, but my father when he was a child had nothing else to listen than to all that communist propaganda about the fall of the dollar and look now, 60 years have passed, and the dollar is going strong but people still say it will ...what?
Russians are desperate for getting dollars and you think this will hurt it? Lol.