In conflicts around the world, children are being killed, raped, abducted and recruited to fight at a shocking scale. In light of this continuing, if not worsening, general failure to protect children in conflict, it is questionable whether existing international law norms and institutions provide sufficient protection and accountability. Consideration needs to be given to whether international law can do more - practically and effectively - when moral lines are crossed. That is the purpose behind this book. It reviews the position of children in conflict by reference to the 'six grave violations' as identified by the UN Security Council. It analyses the protection offered by international humanitarian law, international criminal law and international human rights law, and also assesses the related adjudicative accountability mechanisms. The analysis concludes with a number of recommendations and proposals for reform, with a view to enhancing accountability, deterring future violations and ending the war on children. The book has been written by a team of lawyers, headed by Shaheed Fatima QC, and has drawn on the input of an expert advisory panel comprising leading academics, policy-makers and activists. It has been written as part of the Inquiry on Protecting Children in Conflict. The Inquiry has been sponsored by Save the Children and Theirworld and chaired by former UK Prime Minister Gordon Brown.