The Buffer System in International Relations

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Abstract
Although the term “buffer state” is widely employed, it has received little scholarly treatment. This article investigates the buffer state and buffer system, using both expected utility theory and four case studies: Afghanistan (1870-1978), Cambodia (1954-1971), Lebanon (1943-1981), and Belgium (1831-1945). A definition is put forward stating what conditions of geography, capability distribution, and foreign policy orientations must be present for the system to be a buffer system. This definition has clear behavioral consequences for the larger powers in the system and the buffer state. One derivation from the definition is that multilateral declarations of neutrality and partition are phenomena related to each other and to the existence of buffer conditions. Another derivation is that the buffer state's diplomatic options are severely constrained—with neutrality the most likely policy. Clearly, the proposed definition gives us a better understanding of conflict and conflict resolution in a buffer system.

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