These are leader-level data drawn from the Archigos data. Space considerations mean I offer here just a few columns based on these data.
archigos
A data frame with 3409 observations on the following seven variables.
ccode
a numeric vector for the Correlates of War state code
leadid
the unique leader identifier
startdate
a date for the leader start date
enddate
a date for the leader end date
entry
a character vector for the leader's entry type
exit
a character vector for the leader's exit type
exitcode
a character vector for more information about the leader's exit type
Space considerations mean I can only offer a few columns from the overall data. Archigos data are rich with information. Consult the raw data available on Hein Goeman's website for more. Data are version 4.1.
Goemans, Henk E., Kristian Skrede Gleditsch, and Giacomo Chiozza. 2009. "Introducing Archigos: A Dataset of Political Leaders" Journal of Peace Research 46(2): 269--83.