One big file is at
https://drive.google.com/file/d/11bg7klZc_Hn4vdkiv8VhMl3T29ere1CS/view?usp=sharing
There is software called EUgene
http://eugenesoftware.org/download.asp
that apprently generates data used for this book. But it's shared as exe (yuck) and the code is written in Pascal for Windows (yuck again).
It seems this researcher created data for his paper
http://www.personal.psu.edu/dsb10/research.htm
which I converted from Stata dta into CSV
Some other data I found on http://www.correlatesofwar.org
Keywords: The War Trap, Bruce Bueno da Mesquita, CSV, data file, fk Stata, fk Windows Eugene Code