Subject
Terrorists Recruiting
57
Islamic fundamentalism
24
Jihad
24
Terrorism Prevention
23
Terrorists Recruiting Prevention
22
Terrorism Religious aspects Islam
21
National security
14
Domestic terrorism
13
Domestic terrorism Prevention
13
Internet and terrorism
13
Terrorists Travel Prevention
12
Terrorism Computer network resources
11
Radicalism Religious aspects Islam
10
Social media Political aspects
9
International travel regulations Security measures
8
Online social networks Political aspects
8
Radicalism Prevention
8
Muslims
7
Radicalism
6
Subversive activities
6
Terrorists Recruiting Technological innovations
6
Terrorism
5
Terrorism Prevention Government policy
5
Admission of nonimmigrants Government policy
4
Cyberterrorism Prevention
4
Electronic surveillance
4
Privacy, Right of
4
Privacy, Right of Government policy
4
Terrorists
4
Visas Government policy
4
Yemen (Republic) Politics and government
4
Domestic terrorism Prevention Government policy
3
Internet Political aspects
3
Terrorism Prevention International cooperation
3
United States Foreign relations
3
Electronic intelligence
2
Electronic surveillance Technological innovations
2
Extremist Web sites
2
Information warfare
2
Intelligence service
2
Military assistance, American
2
Muslim prisoners
2
Political stability
2
Prisons Security measures
2
Public-private sector cooperation Law and legislation
2
Radicalization Computer network resources
2
Refugees
2
Rules and practice
2
Strategy
2
Syrians Emigration and immigration Government policy
2
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