First, some words about the dataset. Each observation is a conflict-year. A conflict is dated from its first battle-related death, but only active “episodes” — defined as 25 battle-related deaths — are recorded in the database. For example, the Basque conflict has the following entries:
While it is recorded as starting on 7 June 1968, its first active episode started on 22 October 1978 and lasted until 29 December 1982. A second episode occurred from 23 December 1985 to 31 December 1987, then a third from 28 June to 13 December 1991. For my purposes, this would count as an active conflict for the Christmas Days of 1978-1982 and 1985-1987. Not 1991 however, since that episode ended right before Christmas.
For each conflict-year, I therefore need to construct a dummy to indicate whether it is a Christmas conflict or not. I do it in three steps. First, I construct the variable xmas to set the Christmas Day for each year. Second, I set the variable count to 0 if the conflict-year’s ep_end_date occurs before Christmas. Finally, for all cases where ep_end_date is NA, I set count to 1.
Then it’s a simple matter of counting the active conflicts per year and constructing a bar chart. to illustrate the depressing fact that Christmas 2021 saw an all-time high in active conflicts worldwide.
To end, here’s the song that inspired this post. Have a bad Christmas season everybody.