An historic account of the Second Peloponnesian War (431–404 BCE), written by Thukydides.
This account of this war even today provides a broad account of strategizing international relations. It is still read a a manual of geopolitical strategy and international relationships.
All tactics can be found in this war account, for example forging alliances between strategic actors, outmanoeuvring power of competitors, tactics to maintain independence by providing military material, men or capital to alliance partners, the pursue of "deals" as steps in strategy building and execution, using best available technology to gain stronger positions, and many more.
The book provides a great Understanding what the system is and of Learning Systems.
Reading this book inspires to see parallels in contemporary international conflict, strategy and alliances to maintain power.
https://en.wikipedia.org/wiki/History_of_the_Peloponnesian_War
Bibliographical reference: Geschichte des Peloponnesischen Krieges (History of the Peloponnesian War), 1993. Book I-VIII. Greek and German. Translated and with an introduction and Commentary by Georg Peter Landman. Sammlung Tusculum. Munich: Artemis & Winkler.
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