Not the OP but I can highly recommend Lenin's "What Is to Be Done?" [1], one of the best "no bullshit, no moralising, let's just get things done by seeing things as they really are" books of the "modern" era.
Thanks for the link. Interestingly, I grew up in Poland, under Marxism-Leninism, but none of his books were ever pushed on us, so this is somewhat of a surprise for me.
I'm going to give it at least a quick scan to get an idea.
Lenin's actual writing was not the message that the regime wanted to be known. Usually, the message that gets regimes in power is not the message that keeps them in power.
Clausewitz, on the other hand, definitely qualifies, although it's a much longer read.