Why Kiev's bastion role cannot explain the earlier Sverdlovs

Did the Kiev-class aviation cruisers serve essentially the same Soviet doctrinal purpose as the earlier Sverdlov-class cruisers?

No. Kiev belonged roughly three decades later to the mature bastion and missile-strike system, whereas Sverdlov must be interpreted in its early Cold War context.

A commenter describes Kiev as the centre of a surface group protecting ballistic-missile submarines, with V/STOL aircraft, heavy anti-ship missiles, and a mainly rotary-wing anti-submarine air group. The reply's central correction is chronological: Kiev and Sverdlov belong to settings roughly three decades apart. The later bastion mission cannot establish the purpose of an early Cold War gun cruiser. Soviet terminology and force-protection tasks need to be placed within the strategic assumptions of their own period.