Requests the Special Representative of the Secretary-General on violence against children, upon his/her appointment, and the Special Representative of the Secretary-General for Children and Armed Conflict to cooperate and coordinate their activities, bearing in mind their complementarity, and in this regard to ensure between them, within their respective mandates, that the situations of all children subject to or at risk of violence are addressed, including those of armed conflict, foreign occupation, genocide, crimes against humanity, war crimes, terrorism or hostage-taking, or where peacekeeping operations are deployed, in order to ensure that no child is left uncovered;