Interstate Politics (IP)

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The most recent and complete interstate politics model documentation is available on Pardee's website. Although the text in this interactive system is, for some IFs models, often significantly out of date, you may still find the basic description useful to you.

The interstate politics module traces changes in power balances across states and regions, allows exploration of changes in the level of interstate threat, and represents possible action-reaction processes and arms races with associated potential for conflict among countries. For more on how this data may used and analyzed within IFs, please read below. <header><hgroup>

Structure and Agent System: Interstate Interaction


Interstate interaction
Organizing Structure
Cooperation and conflict
Power, threat levels
Aid flows
Key Aggregate  Relationships 
(illustrative, not comprehensive)
Changes in power, relative power, threat, action-reaction
Key Agent-Class Behavior  Relationships
(illustrative, not comprehensive)
Spending on military, aid

As with the domestic socio-political environment, and unlike the use of cohort-component structures in demographics and of markets and social accounting matrices for economics, there is no completely standard organizing structure that is widely used for representing interstate/international systems. Yet the representation of power-based interaction systems, including interactions related to relative power and to action-reaction dynamics, is common. IFs builds significantly on that conceptual and theoretical base.

Among the most important understandings of students of interstate/international interaction is that conflict and cooperation are not really opposites in relationships. Although the balance of conflict and cooperation will vary within and across relationships, Intensity of interaction often brings both. <header><hgroup>

Dominant Relations: Interstate Politics


Interstate Politics: Dominant Relations

Threat of states towards each other is a function of many determinants. For instance, contiguity or physical proximity creates contact and therefore the potential for both threat and peaceful interaction. Cultural similarities and differences affect threat levels. Yet certain factors are more subject to rapid change over time than are contiguity or culture. Among factors that change, the relative power of states and of their level of democratization substantially affect threat levels.

For a causal diagram see Process: Power and Process: Threat Level.

For equations see IP Equations: Power and IP Equations: Threat Formulation.

Key dynamics are directly linked to the dominant relations:

  • Power is a function of population, GDP, technology, and conventional and nuclear military expenditures, in an aggregation with weights that the user can change (wpwghtpow).
  • Democratization is computed in the domestic socio-political model.

Interstate Politics: Selected Added Value

The larger interstate politics model provides representation and control over a changing index of the probability of war, based on threat levels. It is possible stochastically to introduce war based on that probability and to feed back the destruction of war to population levels and economic capital.

Interstate Politics Flow Charts



</hgroup></header> IFs computes a power indicator that shows each actor’s portion of global power. It does so by weighting (wpwghtpow) each actor’s share of global GDP (at exchange rates or purchasing power parity), population, a measure of technological sophistication (with GDP per capita as a proxy), government size, military spending, conventional power, and nuclear power. Weights of one "1" add the term to the power calculation, and weihts of 0 remove the term from power calculation.