I have watched the videos from your post, and here's my comment. Those Russian and Chinese propaganda ones are only showing their weakness because if you are really strong you don't have to show off your strength all the time. While the USA, having the strongest army in the world, can afford laughing at themselves.
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20 female Chinese soldiers to 1 US marine, not a chance in hell they win.
Do you really think that we are still living in times of one-on-one combat?
But I don't think that a new World War can unfold these days. The truth is that children and other members of the families of top Russian politicians are living in the West, and I suspect the same about China. Those evil governments do not want any war with the Western countries. What they want is to continue to fool and exploit the poor people of their own countries, but hopefully this situation will come to an end soon.