But from a UK targeting point of view, you have to be practically taking fire from the enemy before it is self-defence, as opposed to the Septics' approach of "enemy over the hill with weapons - ENGAGE!"
I haven't got a problem with it - it's the hybrid war we have been fighting for 14 years. But this seems very likely to be intelligence-led targeting which we know and love!
Just don't shoot a combatant when they are injured though, as they will turn on you like a rabid dog and throw the RPAS operator in jail quicker than you can say Sgt Blackman.