War in Iraq

I have been struggling recently about where I should stand on the war in Iraq. My studies over the last few years are leading me to believe that we as believers in Christ should be proponents for peace not supporters of war. However, as I look at the situation in Iraq I start to wonder what would happen if American troops are pulled out of Iraq. Would we be causing a bigger mess than we started or would we be doing the right thing? My fear is that if troops are pulled out because of we are now realizing it is a "bad" war to be in, will we be doing a bigger injustice to the people of Iraq? I am left wondering what is the right thing to do and which side I should stand on.
If being asked whether or not Americans should be there I would support peace over war on any day. But on the other side if mistakes are made someone needs to take responsibility for those mistakes and do what is ultimately right. Maybe it is time for someone to own up to possible mistakes that have been made and make a stand for doing what is right for everyone. If more Iraqis than US soldiers lose their lives because of an ensuing civil war that could be a result of our departure then we would have caused more harm then good by pulling troops out. If there are more US soldiers that lose their lives than Iraqis then troops should be pulled out.
My opinion is that as a country, responsibility needs to be taken for having the best interest of everyone in mind. If as a country (right or wrong) we have gone to war with Iraq to make "improvements" then we need to what is best for everyone. I leave the decision to which side would lose more lives to others who have better access to information than do I...then again that is what got is here.