Regan ninu iwe re Civil Wars and Foreign Powers (2000) nipa ida meji ninu meta ti awon 138 intrastate rogbodiyan laaarin  World War II eyi ti o ti n sumon ipari re ati 2000 ri okere intervention.. 
O darapọ mọ eto V-Entertainment ni ọdun 2013.aṣayan àwọn ere ti o ti ṣeawọn itọkasi.. 