Cuban forces? Long time I haven't heard of them, but I see a logic in sending them to Syria. Obama has said he won't send American troops on the ground, and Putin said the same thing with his Russian troops, so we see the vassals taking their place. I just wonder whose foreign army will America choose.
Both the sides already have their proxy soldiers on ground. The Iranian Revolutionary Guards (Army of the Guardians of the Islamic Revolution), Hezbollah, Russian volunteers and the Iraqi Shia militia are already fighting on the side of the Russians. The Jabhat Al Nusra is fighting on the side of the Americans and their allies in the GCC.