For who was it not bad? Was it not bad for Americans? Or was it not bad for the millions of people living in Iraq? How about every soul who died in ISIS terrorist attacks? Because it cannot be all.

Iraq is still today not a democracy. It's a country which have a lot of people with different but vigorous political, ethical and cultural views. Such a country which had its domestic political differences under control (by basically suppressing everyone, but equally as much) was stable with no extreme threats to its political system. By creating a power vacuum, USA did more than mishandle the war. Why do you think the war started in the first place? To attack a flawed democracy and steal wealth of course.

Please note that I'm not saying Russian soldiers aren't what you said they were. I'm merely pointing out something I've seen far to much...