Diplomatic Exchange , 1817-2005 (v2006.1)


The Correlates of War Diplomatic Exchange data set captures diplomatic representation at the level of chargé d'affaires, minister, and ambassador between members of the Correlates of War interstate system. 

The 2006 version of the data set includes information for the following years:  1817, 1824, 1827, 1832, 1836, 1840, every five years between 1844 and 1914, every five years between 1920 and 1940, and every five years between 1950 and 2005. The dyadic data describe the level of diplomatic representation and diplomatic exchange between members in the COW system.


In any papers or publications that utilize this data set, users are asked to give the version number and cite the article of record for the data set, as follows:

Bibliography Entry: Bayer, Reşat. 2006.  “Diplomatic Exchange Data set, v2006.1.” Online:

This citation will be updated.

Data Set

There are two files included in the distribution ZIP file, Click here to receive data set.


Diplomatic_Exchange_2006v1.csv - the data in comma-separated variable ASCII format

2 Diplomatic_Exchange_2006v1_codebook.pdf - dataset documentation, in Adobe PDF format.

The documentation may also be viewed online.

Note that the data set is too large to read fully in Microsoft Excel (by default, Microsoft Windows will attempt to open the data in Excel).  You must use a statistical software package such as Stata, SAS, or SPSS to appropriately read the data (for instance, using the Stata command:

insheet using “Diplomatic_Exchange_2006v1.csv”

Questions and Feedback

The diplomatic exchange data set is hosted by Reşat Bayer, Koç University, under the COW Data Set Hosting Program. In case of questions or concerns concerning the data or coding rules, he may be contacted by email at