Russian marines were in a fight with ISIS on Sunday. Several members of ISIS died during this fight near Latakia.
Several ISIS members were apprehended when they tried to attack an air base operated by Russian military.
It seems that ISIS had a detailed plan of the Russian base with marked key military installations. Russia reinforced its aircraft by advanced Russian fighter jets Su-30SM Flankers. These aircraft can use various weapons. Another sixty of these aircraft will be transported to Russian base in Syria by next year.
Russia has already transported a number of tanks, artillery and attack helicopters into Syria.
In order to certify that there is no misunderstanding between the U.S. military and Russia, open and high-level communication is established between the two countries.
The Defense Department is currently reviewing and updating contingency plans for armed conflict with Russia, because Russia is now considered a threat.