(ANSA-AFP) - MOSCOW, JUN 25 - Russia said on Saturday its troops have killed "up to 80" Polish fighters in "precision strikes" in eastern Ukraine. "Up to 80 Polish mercenaries, 20 armoured combat vehicles and eight Grad multiple rocket launchers were destroyed in precision strikes on the Megatex zinc factory in Konstantinovka" in the Donetsk region, the Russian defence ministry said in a statement which could not be independently verified. (ANSA-AFP).