I highly doubt that Japan would sell all its US Treasuries at...

I highly doubt that Japan would sell all its US Treasuries at all never mind in one hit. I think they have $US 1.1 trillion worth. Japan is heavily influenced by the US government and to a large degree does as its told which has been the case since their defeat in the second world war. Japan is in all sorts of trouble and may well be the first to default. The tariffs are no doubt having a serious negative effect so selling down their Treasuries will and have been occurring.
The amount of garbage and disinformation on you tube is extreme.
I wouldn't hold out too much hope for anything of substance coming from the BRICS meeting in Brazil as Brazil is another US captured country and I doubt that they would upset their "masters" with positive BRICS statements which would be anti US rhetoric.
Cheers.