It is a novel, easy to read (like 3 evenings) . The topic is interesting in current context, but it is just a scenario , even if provided by ex admiral.

according to author it is China. Its worth to mention that author is not trying to cover the real reasons behind the described confrontation—nothing about the competition between us and chinese capital, nothing about politics before war etc.—just a bloody war.

There is not such thing as middle class, pure sophistic. There are only 2 classes, proletariat and bourgeoisie.