The Russian-made TOS-1 heavy flamethrower system has been spotted near Palmyra during the recent government advance in the countryside of the ancient city.
A media activist, Ivan Sidorenko, has released 3 photos depicting Syrian troops with the Russian-supplied heavy flamethrower system in the area of Palmyra. The system was reportedly used during the governmnent advance against ISIS in the area of the Palmyra silos.
More about the system: