i couldn't find any source with reverse image search on THE MAP and it doesn't have any source on the image, but really none of it fails the laugh test. those most willing to fight have had ongoing border disputes, relatively recent land wars, etc. Morocco fought its neighbor Mauritania from 75-91 and have had ongoing border disputes, the Pakistanis and Indians have slaughtered one another in living memory and certainly have no love lost between them today- Kashmir tensions, border tensions. the Viets fought the Cambodians from 78-89 and everyone knows what was going on there a decade before that.
nationalistic (at least in rhetoric/platform if not in implementation) regimes surely help to increase the stat, as in the Phillippines under Duterte.
would be interested to see statistics for South America. anyone taking big issue with the map's claims (besides it being itself unsourced) have any specific place in mind that seems off?