" 

 : Uh, for anyone to take this claim seriously, don't we need a reliable source which states that English speakers use this term? And while it may be germane that the Arabic term for Iraq is ""Bilad al-Rafidain""  if a reliable source verifies that this is a fact  yet that is no more interchangeable with ""Mesopotamia"" than ""Albion"" & ""Great Britain"" are interchangeable. One is the historic name for the region, the other is the contemporary name. But in any case, we need some reliable sources for this assertion, or else it may result with people getting sanctioned for tendentious editting.    "