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Killing Range: Explaining Lethality Variance within a Terrorist Organization.

Victor Asal1, Paul Gill2, R Karl Rethemeyer1

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|April 4, 2015
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Summary

Technical expertise in the Provisional Irish Republican Army (PIRA) minimized civilian deaths while increasing high-value target lethality. Counter-terrorism events had varied impacts on PIRA

Keywords:
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Area of Science:

  • Political Science
  • Criminology
  • Conflict Studies

Background:

  • The Northern Ireland Conflict (1970-1998) involved complex dynamics of paramilitary organizations.
  • Understanding sub-unit behavior within terrorist groups is crucial for analyzing conflict outcomes.

Purpose of the Study:

  • To analyze Provisional Irish Republican Army (PIRA) brigade-level behavior.
  • To identify organizational factors influencing PIRA's lethality through terrorist attacks.

Main Methods:

  • Analysis of PIRA brigade-level behavior during the Northern Ireland Conflict (1970-1998).
  • Examination of independent variables: technical expertise, cadre age, counter-terrorism policies, brigade size, and IED characteristics.
  • Measurement of lethality via terrorist attacks.

Main Results:

  • Technical expertise correlated with minimized civilian casualties and increased high-value target lethality.
  • Counter-terrorism events had differential impacts: killing PIRA members reduced IED fatalities but also decreased the likelihood of zero civilian deaths.
  • Killing innocent Catholics in a brigade's county significantly increased total and civilian IED fatalities.

Conclusions:

  • Dynamic situational variables at the sub-unit level are essential for understanding terrorist group behavior.
  • PIRA's strategic goal of minimizing civilian casualties was influenced by technical expertise.
  • Counter-terrorism strategies require nuanced analysis due to their complex effects on terrorist group actions and outcomes.