A microscopic theory of electronic spectrum and superconducting pairing in the high-temperature
cuprate superconductors is presented. The theory is based on consideration of strong electron cor-
relations within the Bogoliubov polar model. The Dyson equation is derived by using the equation
of motion method for the thermodynamic Green functions in terms of the Hubbard operators. The
self-energy is evaluated in the noncrossing approximation for electron scattering on spin and charge
uctuations induced by kinematic interaction. The theory demonstrates that a strong Coulomb re-
pulsion results in the anomalous electronic spectrum and unconventional (
d
-wave) superconducting
pairing with high
T
c
mediated by the antiferromagnetic exchange and spin uctuations.