" 
 :I think the core idea of this wording is in connection with the article Khanates of the Caucasus.The opening of the article is this  ""Khanates of the Caucasus were Persian ruled[1] [2][3] principalities on the territory of modern day...."".Indeed , the new picture in that article may mislead the reader in that it combines the western states (non-Persian), with eastern Khanates (autonomous but under Persian suzerainty) in one picture and it should be changed , but anyway in the opening sentence , the connection with Persia(Iran) , is an important point -The picture is also wrong in depicting the borders of Gulistan treaty- . The states that have no organic connection with Iran , like Abkhazia , Georgia , Chechenia and Daghistan can't be easily considered as Khanates , as their rulers where not khans , and their title was Wālī ,Shamkhal and etc (and perhaps Armenian Malikdoms ).Anyway , I prefer this sentence: Baku Khanate was a autonomous Muslim principality on the territory of modern day Azerbaijan under Iranian suzerainty. Originally a province of Safavid empire, it became functionally independent after the assassination of Nadir shah and weakening of central authority in Iran due to the struggle for power   "