And the wikilawyering continues. There's nothing arbitrary about the sources I listed, they include highest-circulation print media outlets in Serbia and Slovenia as well as the most prominent regional web portals. The fact that many sources are non-English language (all perfectly in line with verifiability policies WP:NOENG) is understandable considering Prso doesn't hold the same prominence outside of former Yugoslavia. Even so, there is a number of reliable English language sources, such as Agence France Presse stating explicitly his real first name is Miladin, so weaselly worded unsupported claims such as 'run-of-the-mill agency' and 'below the threshold of relevance' ain't gonna cut it. WP:FULLNAME is very clear about the opening paragraph: "While the article title should generally be the name by which the subject is most commonly known, the subject's full name should be given in the lead paragraph, if known (including middle names, if known, or middle initials).".