These are the 10 types of Russian military aircraft known to be stationed in Syria

The most recent satellite images of the Russian-operated Hmeimim air base in Syria show Moscow has deployed more advanced fighter jets to the region, according to The Drive.

The satellite images, taken in mid-July, show 33 jets and a smaller number of fixed-wing aircraft.

There could, however, be more than 33, as some jets and aircraft could have been conducting sorties or flying elsewhere when the images were taken.

Moscow first sent fighter jets to Syria to help the Assad regime, which is a large purchaser of Russian arms, in 2015 - but that was mostly older attack aircraft, such as the Su-24 Fencer.

Here's what Russia has in Syria now.