Are Russian-controlled the same as Russian? Or a mix?
They are primarily Russian nationals working for a Russian commercial military provider that operates under Russian command in Syria. Some local mercenaries and paramilitary units may also answer to the Russians on an ad hoc basis. This method permits Putin to avoid concern in Russia over cost and Russian military casualties.
#2. Who cares? Give them 2 warning shots with a 3rd “for effect” just to get the message through to them. After that, “light’em up”!