Putin responds to the shoot-down of the Russian FENCER warplane.
Air defense systems now deployed and being further deployed to protect Russian aircraft. Ground and naval assets both having made their SAM [surface-air-missiles] ready.
"Putin sends air-defense missiles to Syria to deter Turkey"
. . . .
"The S-400 missiles, which Russian President Vladimir Putin ordered to be sent to the Hemeimeem air base in Syria's coastal province of Latakia just 50 kilometers (30 miles) away from the border with Turkey, are capable of striking targets within 400-kilometer (250-mile) range with a deadly precision. The military also moved the navy missile cruiser Moskva closer to the shore to help protect Russian warplanes with its long-range Fort air defense system."
"The S-400 Triumf ( NATO reporting name: SA-21 Growler), previously known as S-300PMU-3, is a new generation anti-aircraft weapon system developed by Russia's Almaz Central Design Bureau in the 1990s as an upgrade of the S-300 family."
One radar for target acquisition and one radar for fire control? Communications van on the far left and firing unit with missiles on the far right?
Moskva that "navy missile cruiser" with organic Fort SAM also able to provide additional protection using "sea-based" S-300F (SA-N-6).
Syrian air defense is now Russian air defense. Vlad got the power. Vlad too might feel it is obligatory to shoot-down one NATO warplane in the future? I sure hope not.