Coalition to Stop the Use of Child Soldiers
It is comprised of a large number of international organizations, and its informative site contains lists of relevant upcoming events, links to databases, question and answer factsheets, and links to member groups' websites.

UN Special Representative to the Secretary General on Children and Armed Conflict
This is the Special Representative Olara Otunnu's website which contains press relaeases, reports, field mission reports and other issues related to war-affected children.