Adolescent Adolescent psychology Adolescents Aspect psychologique Child Child Welfare Child psychology Child soldiers Children Children and war Emotional problems of children Enfants Enfants et guerre Enfants soldats General Guerre Kind Krieg Psychic trauma in children Psychological aspects Psychologie Psychology, Adolescent Psychology, Child SOCIAL SCIENCE Stress, Psychological Traumatisme psychique chez l'enfant Troubles affectifs chez l'enfant Violence War Warfare