I think that you are more or less correct. I think that "by other means" here is another way of saying ‘using a different method' or ‘in a different way’. So "war is the continuation of politics using a different method". Means = method So “by other means” = ‘[do something] in a different way/using a different method’. For example, washing the dishes by hand is A DIFFERENT WAY/ANOTHER MEANS of cleaning the dishes as compared to using a dishwasher. Walking and cycling are DIFFERENT MEANS/DIFFERENT METHODS of travelling. "Chaos is the continuation of war, by even better means". This is difficult to define. It is an ironic statement. “Chaos” = ‘complete disorder and confusion’ in other words ‘a big mess’. So, I guess that the writer is saying something like ‘after war there is complete disorder and confusion/after war there is a big mess’.

Hello Anna, I think if you use the word 'way' instead of 'means' it may become clearer. War is the continuation of politics in a different way Chaos is the continuation of war in a better way Hope this helps Bob