UNICEF’s Information by Country summarizes the issues facing children around the world. Select the country/area that you are researching:
http://www.unicef.org/infobycountry/index.html
The Coalition to Stop the Use of Child Soldiers was formed by a group of major non-governmental agencies wanting to take action on this issue. Their Regions page links you to information fact sheets by country and region:
http://www.child-soldiers.org/regions/
Be the Change - How you can take action to make a difference to the world’s children: