A preliminary answer to your last but one post. What I meant is that the virus was not a genetically engineered virus as Dr Edd explains. Genetic engineering leaves tell tale traces. Therefore it is a natural virus. As I had previously explained, its presence in a lab would either be explained by a programme of injecting the virus into animals until it adapts or by a fluke, both somewhat unlikely.
I have not read in detail any of your references but they do not amount to any overwhelming evidence of anything. As to Petrovsky, my quick reading of what he says is that it is a theoretical possibility rather than that there is any proof.
I think the WHO and China are willing to collaborate on this but it is very difficult for China to accept the intrusive inspections that the US who wants to demonise both, would want to conduct any investigation. It also seems that the Australian government is also active in taking this anti China line.
This will never be solved by over-politicising. The US has form here whereas China has no such history. I would just be careful that this does not become a distraction given that China has managed the virus whereas US and U.K. have not.