Various studies (e.g., Bleiken, 1976; Bogdanović, 1976; Gruden, 1992; Košir, 1993; Reisp, 1998) confirm that great geopolitical changes in various areas (migration of nations included) were always a result of wars or, as the introduction to the Slovenian edition of John Keegan’s book (2005: 7–8) states