According to this realist approach in international relations is that the nation-states behaviours depend on their own interests. Additionally, they consider each other's interest only if this interest is damanded by threatening or by use of power.
Nation-States do not act like humans and their acts do not rely on humanitarian basics. Even the mutually signed international agreements according to the procedures of the international law do not limit their actions. When this concept is practiced in social real-life relations the actors would be radically self-centered and only pursuing their own interests.
On the other hand, in Game Theory determanants of actions are not studied.
Regarding the defence alliances between the countries for instance. 2-3 countries can come together and form a defence force against an external threat. This is win-win situation as in the Prisoner's Dilemma. Each member benefits and provide multi protection and confirm not to attack to each other.
In arms race for instance each nation-states try to incerase their military capacity up to limits and they do not take into consideration "fix-limits".
Cuban Missile Crisis can be a good example for game theory. For the USA there was two options whether to attack missile installations in Cuba or blockade Cuba and prevent future installations and for the USSR again two options; taking back the missiles or insisting on building them in Cuba. At the end both countries have been met in win-win situation again and against withdrawing the missiles in Cuba, Jupiter missiles were taken back from Turkey by the USA.
Books on International Politics
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