That feeling of “something must be done” is one of the most dangerous impulses if not accompanied by a lot of thought and knowledge. “helping to build peace in the world” “Guilt was the main motivating factor for me” “I feel it is my duty because of the horror of what is happening there” don’t really cut it. Well, maybe they will feel they’ve done good, as they contribute to one side in a bloody civil war, alongside al Qaida and other Salafis. Maybe they’ll learn that fighting rarely helps build peace.