Cohabitation in International Relations Managed Competition in Fragile States

Introduction

• The Puzzle
• Terminological Clarifications
• The Argument in Brief
• The Diagnostic Matrix
• Methodology
• The Book’s Roadmap
• Why This Matters Now

Chapter 1: The Theoretical Framework – The Logic of Cohabitation

• Part 1: Functional Taxonomy of Actors
• Part 2: The Nature of Influence: Transactional vs. Natural
• Part 3: The Cohabitation Theory: A Conceptual Framework
• Part 4: Core Principles of the Cohabitation Framework
• Part 5: Research Design and Methodology
• Part 6: Theory Development and Core Hypotheses
• Part 7: The Cohabitation Diagnostic Matrix
• Part 8: Case Selection and Analytical Categorization
• Part 9: Case Summary

Chapter 2: Conceptual Boundaries: Distinguishing Cohabitation from IR Theories

• The Core Theoretical Claim
• The Analytical Gap
• Part 1: Positioning Cohabitation Theory in International Relations
• Part 2: Cohabitation vs. IR Theories
• Part 3: Distinguishing Forms of Sovereignty and Statehood
• Part 4: The Cohabitation–Shatterbelt Threshold
• Conclusion: The Theoretical Value of Cohabitation

Chapter 3: Greater Middle East – Types of Cohabitation

• Introduction
• Case Study I: Lebanon – Archetypal Case of Cohabitation
• Case Study II: Iraq – Cohabitation Under Proxy Violence
• Case Study III: US–Iran Tactical Cohabitation in Afghanistan
• Case Study IV: Pathological Cohabitation – US–Pakistan in Afghanistan
• Conclusion: Theoretical Synthesis

Chapter 4: Cohabitation in South Asia: Functional Bifurcation

• Introduction
• Part 1: The “Functional Bifurcation Subtype”
• Case Study I: Sri Lanka as ‘Crisis-Consolidated’ Cohabitation
• Case Study II: Nepal – Geographic Inevitability as Structural Cohabitation
• Part 2: Comparative Synthesis: Sri Lanka and Nepal
• Part 3: Synthesis: The Endurance of the Functional Bifurcation Subtype

Chapter 5: The “Natural Influence” Constraint: Russia and Moldova

• Introduction
• Part 1: Structural Foundations of Russian Influence
• Part 2: Historical Formation of Russian Natural Influence
• Part 3: Maintaining Natural Influence Under Stress
• Part 4: Why Moldova Does Not Become a Shatterbelt
• Conclusion: Constraint-Dominated Overlap as a Distinct Outcome

Chapter 6: When Cohabitation Fails: Shatterbelts

• Introduction
• Part One: From Constrained Rivalry to Shatterbelts
• Case Study I: The Proximity Constraint – Ukraine
• Case Study II: The Complexity Constraint – Syria
• Case Study III: The Hegemonic Constraint – Venezuela
• Case Study IV: The Institutional Constraint – Central African Republic
• Part 2: Ex Ante Indicators of Equilibrium Collapse
• Synthesis: The Structural Limits of Managed Competition
• Conclusion

Chapter 7: Comparative Analysis – Patterns, Limits, and Scope Conditions

• Introduction
• Part I: Recurrent Empirical Patterns Throughout Regions
• Part 2: Limits and Boundary Conditions of Cohabitation
• Part 3: Maintenance Indicators
• Part 4: The Cohabitation Diagnostic Matrix
• Part 5: Comparative Typology of Cohabitation Cases
• Part 6: Returning to the Hypotheses
• Part 7: Positioning within International Relations Theory
• Part 8: Future Research Directions
• Part 9: Limitations of the Study
• Part 10: Policy Implications
• Conclusion: Cohabitation as a Structural Mode of Multipolar Order

Conclusion: Cohabitation in Grand Strategy and Conflict Management

• The End of Absolute Victory
• The Failure of Exclusionary Hegemony
• A Strategy for Great Powers
• The Normative Implications of Cohabitation
• Contributions to International Relations Theory
• Looking Forward: Cohabitation in an Era of Multipolarity
• Final Reflection

Biography

Dr. Leila Nicolas is a distinguished scholar-practitioner specializing in Great Power politics, Grand Strategy, and MENA politics. She serves as a Professor of International Affairs at the Lebanese University and the Lebanese Army institutions.

A Fulbright Scholar at Fordham University (New York), Dr. Nicolas bridges the gap between high-level academic theory and operational strategy. She has been a recipient of a US Department of State scholarship (Grand Strategy in Context). Besides, she was a visiting speaker at prestigious institutions in the US and Europe.

Beyond academia, Dr. Nicolas is a highly sought-after consultant and media commentator. She frequently provides geopolitical analysis for major global networks. She is also the co-founder of the NGO Lebanese for Democracy and Good Governance (LEDGE). She has been active in civil society efforts promoting Transitional Justice and the Rule of Law in the MENA region since 2000.

"In her inspiring new book, Dr. Leila Nicholas accounts for how rival powers manage to produce overlapping influence in weak states. The book develops the Theory of Cohabitation to explain how a global power and a regional power challenge one another in a weak state while neither is able to exclude the other, generating cohabitation as the least costly mechanism for both. Ultimately, the book neatly explains the conditions under which such an equilibrium holds. Dr. Nicholas presents these issues with clarity and vigor, thus providing a highly valuable contribution to the field of  international relations in the age of multipolarity."

Dr. Toni Alaranta - Senior Research Fellow. The Finnish Institute of International Affairs            

 

"Dr. Leila Nicolas's Cohabitation Theory offers a timely, rigorous framework for analyzing great-power competition within weak states. By introducing the "Diagnostic Matrix" and concepts like "functional allocation, this book provides international relations scholars and policymakers with valuable analytical tools to evaluate how rival external powers manage overlapping influence and navigate structurally complex, multipolar environments. For Korean diplomats, who operate in one of the world's most complex strategic environments, the analytical framework presented in this book is both timely and highly relevant."

Mr. Kihyun Noh, Second Secretary and Consul at the Embassy of the Republic of Korea to Lebanon and Syria.

"Dr. Leila Nicolas brings fresh clarity to a complex field. Cohabitation in International Relations offers vital insights for scholars and policymakers on managing competition in fragile states and navigating gray-zone conflict. In addition to what it offers, the book also discusses her original theory of “cohabitation” as a practical idea that can be used to sustain stability without collapse."

BG. Elias Aad, PhD, Head of the Border Control Committee- Lebanese Armed Forces

 

"Dr. Leila Nicolas challenges conventional thinking about great-power competition with an innovative and timely theoretical framework. Combining conceptual originality with wide-ranging empirical analysis, Cohabitation in International Relations offers a compelling explanation of how competing powers coexist and manage influence in fragile states, while shedding important light on the dynamics of power and governance at the local and regional levels in an increasingly decentralized, multipolar system. Provocative, accessible, and highly relevant, this book is an important addition to contemporary debates on international order and geopolitical competition."

 Zenonas Tziarras, Department of Turkish and Middle Eastern Studies, University of Cyprus