History Terrorism Prevention 11 Islam 9 Religious aspects 8 World politics 8 Government policy 6 Islamic fundamentalism 6 Foreign relations 5 Juvenile literature 4 Political aspects 4 September 11 Terrorist Attacks, 2001 4 Special operations (Military science) 4 Jihad 3 National security 3 Political violence 3 Special forces (Military science) 3 United States 3 20th century 2 Atrocities 2 Chronology 2 Communism 2 Congresses 2 Guerrilla warfare 2 Influence 2 Insurgency 2 Intelligence service 2 International relations 2 Islam and politics 2 Middle East 2