Somewhere lost in the MSM ”smoke joke” haze, the addition of two cruisers and 3 destroyers will certainly improve the offshore Syrian defensive shield, with the necessary armaments & systems. Russia will establish a strong “no fly zone” over Syria, to scupper the US’ & NATO’s version of one. In all likelihood, if the US chooses to carry out military operations & tries to take out Syrian airbases, they will resort to launching missiles. The ‘eyes’ in the ships can give suitable warning and ability to shoot-down incoming missiles, since the fleet uses the Fregat and Podberezovik radars . The former can detect aerial targets at a distance of 250 km, the latter at 500 km. Russia is still catching up with NATO on using seaborne AWACS; so for the fleet is a kind of stopgap measure.
Ship-launched missiles have been used in anger by the Russians, in highly-visible actions such as the Caspian Sea Fleet back in October & November 2015 with Kalibr missiles launches.