Good luck with sanctioning China, when it makes most of the electronics hardware your country's economy relies on, amongst other stuff. Maybe you can get round to it in 5-10 years, after you've enacted a strategic plan to remove all your dependency on Chinese trade goods, and sucked up the pain of inflation from all the additional costs incurred by relocating so much production to other countries.
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I think we humans have a common psychological feature, to seek blame. I remember a case of a woman who ran down a child. In the review, it was shown that she was driving within the speed limit, did nothing wrong, it's just a small kid ran out right in front of her car with her having no time to brake and that was the end of the kid. After the driver was cleared of any wrongdoing, the mother of the child raged at the injustice that this woman could kill her child and not receive any punishment.
Irrational, of course. But also perhaps understandable. There are two factors going on.
Firstly, that this mother was not minding her child properly, leaving him free to run into the road. The element of scapegoating, deflecting blame. There is a desire to blame China in part for the godawful hash we made over it. Doubly painful, to see (even despite their massaged figures) that China did a better job of controlling covid-19 than we did. Blaming China is a way for our countries to distract from their own failings. We can attack their mishandling, but how much force does this have to look at our own dead? How do we avoid the accusation of hypocrisy about China's inadequacies, when our own are plain to see?
Secondly, the idea that there has to be someone responsible for everything. It is normal, when in pain, to want some form of vengeance to make it better. The idea that if someone can be blamed, then something can be controlled and not happen again. Just like in the medieval era, a drought wipes out your crops, it's because your village angered God, or there's a witch. The idea that random, natural, terrifying things happen that up-end our lives is hard to accept. One day, your house, your child, your own life is gone because of a cosmic twitch no-one could do anything about. Psychologically more comforting to think that it's someone's fault, and it can be controlled, and not happen again.
There is another factor that China is a geopolitical enemy, that we do not trust and with many ethical values we do not approve of. And it is far easier to hate and suspect an enemy.
By which I would summarise that we have powerful emotional reasons to think the worst of China. But these emotional reasons cloud our judgement, rather than give clarity. SARS was not man-made, nor MERS, nor a host of 'flu strains over the years. So why suddenly is Covid-19 different... except that it caused orders of magnitude more disruption?
Until there is good evidence otherwise, the base assumption and mostly likely reality should be that this is a natural virus.