yes / Efforts to combat and prevent illicit trafficking and proliferation of small arms and light weaponsEfforts to combat and prevent illicit trafficking and proliferation of small arms and light weapons (SALW) are obstructed by lack of capacity to trace sources and lines of supply for arms. Such efforts are necessary in order to identify points of diversion or loss of responsible control so that actions can be taken to tackle the problems. This hampers efforts to prevent future loss and diversion, for example, or to close down unauthorised or destabilising arms supply networks. Measures to enable tracing of sources and lines of supply of SALW are therefore a priority. Because of the international scope of the flows of SALW, such measures need to be taken by all states and all other relevant members of the international community. International standards and mechanisms to enable tracing need to be established and developed as a priority. An effective international system to enable tracing of sources and flows of SALW requires three essential elements: adequate marking to uniquely identify each weapon; detailed and accessible record-keeping; and mechanisms for international co-operation in tracing sources and lines of supply of SALW. At present there are substantial weaknesses and problems in each of these three areas. (SALW) are obstructed by lack of capacity to trace sources and lines of supply for arms. Such efforts are necessary in order to identify points of diversion or loss of responsible control so that actions can be taken to tackle the problems. This hampers efforts to prevent future loss and diversion, for example, or to close down unauthorised or destabilising arms supply networks. Measures to enable tracing of sources and lines of supply of SALW are therefore a priority. Because of the international scope of the flows of SALW, such measures need to be taken by all states and all other relevant members of the international community. International standards and mechanisms to enable tracing need to be established and developed as a priority. An effective international system to enable tracing of sources and flows of SALW requires three essential elements: adequate marking to uniquely identify each weapon; detailed and accessible record-keeping; and mechanisms for international co-operation in tracing sources and lines of supply of SALW. At present there are substantial weaknesses and problems in each of these three areas.