War Peace 27 History 24 International relations 15 World politics 7 India 6 China 5 Culture 5 Foreign policy 5 Social aspects 5 United States 5 War and society 5 Basic training (Military education) 4 Combat 4 Empathy 4 Europe 4 Imperialism 4 Just war doctrine 4 Masculinity 4 Men 4 Military socialization 4 Psychological aspects 4 Psychology 4 Religious aspects 4 Social conditions 4 Social problems 4 Soldiers 4 Vietnam 4 Arms control 3 Causes 3