I'm sure a trained soldier can discern real weapon fire from non-lethal one.
And non-lethal weapon wont kill the dog, border patrol will no doubt unleash on me.
Also, if I kill Ukrainian border guard, who opened a fire at me, would that count as self defense in European court? Because in armed conflict with Ukraine people have no choice but to defend themselves, since Ukraine prevents them from emigrating.
Same with these Donbass people, should have just opened the border for them and allowed them all to leave Ukraine, without allowing them back.