Anarchy in the international system

According to the realist perspective, how does anarchy in the international system lead to war? Shortly describe and explain what the principle of decentralized distribution of power is. What is the self-help system? Describe the single dominant power system (one-polar/Hegemonic), the bipolar, the three polar, and the multi-polar international systems.

2- Shortly describe and explain the security dilemma.  Explain why the probability of war increases as a result of the alliances against the dominant power in hegemonic (single-polar) international systems? Why in periods of power transition from the dominant country toward the others (one or more countries) the probability of war increases?

3- Use your critical thinking skills, details, example/s, and/or alternative example/s – to express agreement or disagreement with the Realist Perspective’s policy solution to war that is – Balance of Power? Can human societies avoid war in your personal view?