I would call myself a pacifist. I have thought about this a lot both in the personal (No to smacking, Zero tolerance of Domestic Violence, a hard line on Violence of any kind, bullying, football hooliganism, etc.) and the political, whether sending troops to fight on one side or the other in a conflict or starting a conflict or keeping one going endlessly e.g. NI Israel/Palestine.
However, I do support the concept of Policing, where the object of the excercise is to get between the warring factions and keep them apart/under control until a resolution of the dispute is found through mediation, discussion, bargaining. Again this is personal - e.g standing between siblings who are knocking strips off each other, and political - e.g. Nato forces going into an area to enforce a cease fire.