USA doesn't have any qualms at all for killing civilians in middle east.

https://sg.news.yahoo.com/over-100-civilians-killed-mosul-blast-march-u-161116613.html

https://sg.news.yahoo.com/us-led-strikes-kill-35-civilians-east-syria-002816114.html

However, USA is quick to pinpoint on others for killing civilians especially Russia in middle east.  In the future, Russia can just copy the justifications given by USA when it kills civilians accidentally in any strikes.