Russia has just deployed its most advanced spyplane to Syria

The Tu-214R is a Russian ISR (Intelligence Surveillance Reconnaissance) aircraft. In other words, a quite advanced spy plane. As we have already explained here in the past, it is a special mission aircraft equipped with all-weather radar systems and electro optical sensors that produce photo-like imagery of a large parts of the ground: these images are then used to identify and map the position of the enemy forces, even if these are camouflaged or hidden.

See the full article at theaviationist.com