It's Not Really That Hard To Understand
What makes you incapable of understanding the difference between intentionally harming innocents and harming them by mistake or misunderstanding? Yes innocents get killed both ways. One way terrorists get eliminated and the world gets safer. The other way is exactly what should be faught against because caving into terrorism reduces freedom. It would be nice if the good guys could kill all the bad guys without harming innocents, but that has never been possible. The US has a better capability of that than any nation ever before.
Regards,
Mark