add_cow_alliance: Add Correlates of War alliance data to a dyad-year data frame
Description
add_cow_alliance() allows you to add Correlates of War alliance
data to a dyad-year data frame
Usage
add_cow_alliance(data)
Arguments
data
a dyad-year data frame (either "directed" or "non-directed")
Value
add_cow_alliance() takes a dyad-year data frame and adds information about
the alliance pledge in that given dyad-year. These include whether there was an alliance
with a defense pledge, neutrality pledge, non-aggression pledge, or pledge for consultation
in time of crisis (entente).
Details
Duplicates in the original directed dyad-year alliance data were pre-processed. Check
cow_alliance for more information.
References
Gibler, Douglas M. 2009. International Military Alliances, 1648-2008. Congressional Quarterly Press.