in the campaign “Beginning of the political subjugation of the Nokhchi (1588–1591)”
The occupation administration imposed vassalage under the guise of an equal alliance: historian Murat Yasar notes that the rulers «regarded the shert rather as a military alliance»[1], whereas historian Michael Khodarkovsky points out that «in Moscow's eyes, the shert now signified an oath of allegiance by the tsar's new and loyal subjects»[2].