Analysis of information sources in references of the Wikipedia article "Islamic State insurgency in the North Caucasus" in English language version.
Baghdadi, the 'Emir of the Faithful', has 'accepted your bayat and has appointed the noble sheikh Abu Muhammad al Qadarī as Wali [or governor] over [the Caucasus]', Adnani says.
See chart "Number of deaths" from 2015 to 2017