yes / [Introduction]International commitments and measures to prevent, reduce and combat uncontrolled or illicit small arms and light weapons (SALW) holdings and flows are widely understood to encompass not only the weapons but also their ammunition. This is obviously necessary. Thus the UN Programme of Action to Prevent Combat and Eradicate the Illicit Trade in Small Arms and Light Weapons in All Its Aspects (PoA) includes many commitments that apply to ammunition as well as to small and light weapons. Progress in implementing the PoA includes many measures concerning ammunition, including: controls on transfers; preventing diversion to illicit trade; marking, record-keeping and tracing; weapons collection; secure storage; and destruction.1 Unfortunately, progress in implementing the PoA in relation to ammunition remains particularly patchy and inadequate. This is partly because it has too often been considered as a residual category. Negotiations and programmes to control SALW have tended in the first instance to focus on the weapons systems, and have then been deemed to apply, `as appropriate¿, also to ammunition. But control and reduction of ammunition raise their own distinct and challenging issues. Without focused attention, and clarification of what is meant by `appropriate¿, controls and measures on ammunition have often been neglected or mishandled.[Executive summary] The 2001 United Nations Programme of Action to Prevent, Combat and Eradicate the Illicit Trade in Small Arms and Light Weapons in All Its Aspects (PoA) and other associated Small Arms and Light Weapons (SALW) international commitments and measures are widely understood to encompass not only the weapons but also their ammunition. Unfortunately, progress in implementing the PoA in relation to ammunition remains particularly patchy and inadequate. This is partly because it has too often been considered as a residual category. But control and reduction of ammunition raise their own distinct and challenging issues. This relative neglect is resulting in large numbers of avoidable deaths and injuries.