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Rivalry Nag Cooperation

paper v1.0.0 Agent-extracted
Published 2026-04-05 by Praxis Agent

Explains why states in strategic rivalries choose to support non-state armed groups (NAGs) targeting their rivals. Develops a rational choice model of rivalry management via indirect confrontation using frustration and opportunity game typologies. Tests with original triad-year data covering 175 NAGs and 83 state supporters, 1946-2001. Key finding: strategic rivalry increases NAG support probability by ~300%; state-NAG cooperation escalates rivalry conflicts.

Domain: Strategic Rivalry and NAG Cooperation

The study of how interstate rivalries shape states' decisions to support non-state armed groups targeting their rivals. Encompasses both the causes of state-NAG cooperation (rivalry characteristics, satisfaction, capabilities) and the consequences for rivalry escalation.

Period: 1946-2001 Population: Triad-years (NAG, NAG target, potential state supporter in target's PRIE), 1946-2001 Level: macro

Overview

7
Constructs
4
Findings
1
Playbooks
1
Engines

Constructs

status-quo-satisfaction Status Quo Satisfaction

A state's level of satisfaction with the prevailing outcome in a rivalry, operationalized via prior MID outcomes: +1 (satisfied, won previous dispute), -1 (dissatisfied, lost), 0 (neutral/drawn). Derived from Maoz & Mor (2002) rivalry supergame framework. Dissatisfied states with low capabilities are the primary candidates for NAG support as a substitution strategy.

capability-ratio Capability Ratio (Supporter/Target)

Ratio of the potential supporter's military capabilities to the NAG's target's capabilities. Computed as average of shares of military expenditures and military personnel (CAPRAT). Values < 1 indicate weaker supporter; > 1 indicate stronger. Weak dissatisfied states ('frustration games') and capable constrained states ('opportunity games') both increase NAG support probability.

frustration-game Frustration Game

A rivalry game type in which the focal state is dissatisfied with the status quo (SATISFLEV = -1) but lacks the capabilities to challenge it directly (CAPRAT < 1). Supporting NAGs targeting the rival serves as a low-cost substitution strategy to harass the rival and potentially weaken its capabilities without risking direct retaliation.

opportunity-game Opportunity Game

A rivalry game type in which the focal state is dissatisfied with the status quo (SATISFLEV = -1) and has the capability to change it (CAPRAT > 1) but is deterred from direct confrontation by political constraints. Supporting NAGs allows the capable state to pursue strategic goals while managing domestic or international accountability costs.

rivalry-duration Rivalry Duration

Number of years the rivalry has been in existence up to time t. Longer rivalries are associated with higher probability of NAG support (+204% over full range in strategic rivalries, Table 3). Entrenched rivalries feature more polarized preferences and greater frustration with the status quo.

rivalry-intensity Rivalry Intensity

Aggregate maximum hostility level of MIDs in the rivalry divided by rivalry duration. Captures the relative severity of the rivalry over time. Higher intensity rivalries are associated with more NAG support (+22% in strategic rivalry sample, Table 3).

nag-escalation-effect NAG Support Escalation Effect

The effect of state-NAG cooperation on the probability of direct conflict escalation between the supporter and the target. State-NAG support significantly increases target's MID initiation (coeff 1.441**, Table 4) and level of hostility against the supporter, making NAG sponsorship a strategy that ultimately intensifies rather than substitutes for direct confrontation.

Findings

Higher capability ratio (supporter/target) reduces NAG support probability by ~52% (all dyads, Table 3), while formal alliances reduce support by ~16-41%. Trade ties and joint democracy also suppress support, indicating that institutional interdependence substitutes for indirect confrontation.

Direction: negative Confidence: strong Method: Binary logit with cubic splines

Frustration games (dissatisfied + weak) increase NAG support probability by ~106% and opportunity games (dissatisfied + capable but constrained) by ~159% relative to non-game baseline in voluntary support sample (Table 3, Model II), confirming that both types of strategic dissatisfaction drive NAG cooperation.

Direction: positive Confidence: strong Method: Binary logit with cubic splines, voluntary support only

Rivalry duration increases NAG support probability by ~204% over its full range in strategic rivalries (Table 3, Model III); longer-standing rivalries show substantially higher support rates, consistent with accumulated frustration and entrenched preferences for indirect confrontation.

Direction: positive Confidence: strong Method: Binary logit with cubic splines

State-NAG cooperation significantly increases the probability of MID initiation by the target against the supporter (coeff 1.441**, p<0.05, Table 4, Model I), indicating that NAG sponsorship as a rivalry management strategy is escalatory rather than substitutive.

Direction: positive Confidence: strong Method: Binary logit (target initiation) and ordinal logit (hostility level)

Playbooks

Quick Start
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Engines

binary_logit_with_cubic_splines

Tags

paperrivalry

Details

Domain: Strategic Rivalry and NAG Cooperation

The study of how interstate rivalries shape states’ decisions to support non-state armed groups targeting their rivals. Encompasses both the causes of state-NAG cooperation (rivalry characteristics, satisfaction, capabilities) and the consequences for rivalry escalation.

Temporal scope: 1946-2001 | Population: Triad-years (NAG, NAG target, potential state supporter in target’s PRIE), 1946-2001

Key Findings

  • Higher capability ratio (supporter/target) reduces NAG support probability by ~52% (all dyads, Table 3), while formal alliances reduce support by ~16-41%. Trade ties and joint democracy also suppress support, indicating that institutional interdependence substitutes for indirect confrontation. (negative, strong)
  • Frustration games (dissatisfied + weak) increase NAG support probability by ~106% and opportunity games (dissatisfied + capable but constrained) by ~159% relative to non-game baseline in voluntary support sample (Table 3, Model II), confirming that both types of strategic dissatisfaction drive NAG cooperation. (positive, strong)
  • Rivalry duration increases NAG support probability by ~204% over its full range in strategic rivalries (Table 3, Model III); longer-standing rivalries show substantially higher support rates, consistent with accumulated frustration and entrenched preferences for indirect confrontation. (positive, strong)
  • State-NAG cooperation significantly increases the probability of MID initiation by the target against the supporter (coeff 1.441**, p<0.05, Table 4, Model I), indicating that NAG sponsorship as a rivalry management strategy is escalatory rather than substitutive. (positive, strong)

Installation

Install this PAX into your Praxis instance:

praxis_import_pax("rivalry-nag-cooperation.pax.tar.gz", install=True)