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Correlates of War External Links

Professional Organizations

American Political Science Association

European Political Science Association

Eurasian Peace Science Network 

International Political Science Association

International Studies Association

Network for European Peace Scientists 

Peace Science Society (International) 

Society for Political Methodology 

Women in Conflict Studies 


Related Data

These data sets either employ Correlates of War country codes, derive from, or build upon, core COW datasets (e.g. alliance, militarized dispute, war, state membership data) and are largely compatible with COW coding rules and other COW data sets.

The Alliance Treaty Obligation and Provisions (ATOP) Project

Behavioral Correlates of War

EUGene Software

CShapes: (historical maps of state/capital boundaries)

International Crisis Behavior (ICB) Data Archive  

The Issue Correlates of War (ICOW) 

The Computational Event Data System (follow-on to the KEDS System)  

Minorities at Risk Project 

Gleditsch's Polity-D Data 

Polity IV Project 

Revolutionary Leader Dataset 

SHERFACS Crisis Data Archive 

Tatu Vanhanen's Polyarchy Data Archive

Peace and Rivalry data from Goertz, Diehl, and Balas. These data are described in Goertz, G., Diehl, P. and Balas, A. 2016. The Puzzle of Peace: Explaining the Rise of Peace in the International System.  Oxford University Press.


Other Major Data Projects

These represent a selection of the major resources and data sets frequently used by scholars in quantitative international relations. These links represent not simply replication data sets, but time-series-cross-sectional datasets on core variables.

PRIO Armed Conflict Data

Uppsala Conflict Data ProgramUCDP Program overview,

Stockholm International Peace Research (SIPRI) databases

Freedom House data

Organization of Economic Cooperation and Development (OECD) data

United Nations Statistics Division  

Penn World Tables 

International Monetary Fund (IMF) data 

Kristian Skrede Gleditsch and Michael Ward's Interstate System data

Kristian Skrede Gleditsch's Expanded Trade data

Kristian Skrede Gleditsch's Minimum Distance data

Kristian Skrede Gleditsch's Expanded War data

The Logic of Political Survival data source  

Human Security Centre 


Correlates of War Book Series from CQ Press

This book series is a result of a collaboration between the COW Project and CQ Press. 

International Military Alliances: 1648-2008. (2008). Douglas M. Gibler. 

Resort to War: 1816-2007. (2010). Meredith Reid Sarkees and Frank Whelon Wayman.  

Handbook of International Rivalries. (2011). William R. Thompson and David Dreyer.

A Guide to Intra-state Wars: An Examination of Civil, Regional, and Intercommunal Wars, 1816-2014. (2016). Jeffrey S. Dixon and Meredith Reid Sarkees.


Useful Documents

These documents contain particularly helpful discussions or information about data sets in international relations.

Kristine Eck's "Beginner's Guide to Conflict Data" (UCDP)