As to socialism, unless it is international to the extent of producing a World Government which controls all military power, it might more easily lead to wars than does capitalism, because it represents a still greater concentration of power.
Perhaps one should also consider that many significant socialists were killed by other socialists. I am not saying this to defend capitalism or its order, however socialist organisations did not have an international standards that can prevent such calamities nor could they prevent the conflict socialist institutions may have with the workers councils.
https://archive.ph/5mXgz