You’ve pointed out multiple cases where socialist experiments have failed, and none that have succeeded.
Each example I illustrated was a success. They were just conquered. Having a worse military is not a failure of a system, it's a result of capitalist interests having the backing of the state, and said states having trained military forces, while workers are untrained in how to use violence to achieve the means they want, so they're generally less effective at it. Being effective at using violence is not the mark of a good system, usually the opposite actually.
Those "external forces" are literally violent fascists murdering workers and seizing the means of production on behalf of private enterprise. Even in the case of the U.S, Britian, France, etc. Enclosure was a violent process by capitalists to seize the commons. They often used liberal framings like "the tragedy of the commons" to justify seizing common land and handing it off the private enterprise. In Europe this was done with some physical violence, but not nearly as much as the U.S. The U.S literally genocided the native americans over hundreds of years to seize the commons here and sell it off to private enterprise.
Either your point I quoted is:
If it's 1, that's obviously correct, that's just a recount of history. If it's 2, that's ridiculous, and we can go into it, but I honestly have no idea which one of these is your position. At first you made it seem like you were defending capitalism, but you've repeatedly rejected any framing of your positions as one towards "justification", so I honestly have no idea if you're even defending capitalism, or if you just think I don't understand that the world is capitalist, and you're trying to teach me that the world is capitalist.
I can assure you, I understand violent capitalism dominates the international stage. I don't know what would give you the impression that I don't see this