Subject
Terrorists Recruiting
21
Terrorism Prevention
14
Islamic fundamentalism
13
Jihad
12
Terrorism Religious aspects Islam
12
Internet and terrorism
7
Terrorists Recruiting Prevention
7
Domestic terrorism Prevention
6
Domestic terrorism
5
National security
5
Social media Political aspects
5
Terrorists Travel Prevention
4
Radicalism Religious aspects Islam
3
Terrorism Prevention International cooperation
3
Terrorists Recruiting Technological innovations
3
Admission of nonimmigrants Government policy
2
Electronic surveillance
2
Electronic surveillance Technological innovations
2
Intelligence service
2
International travel regulations Security measures
2
Military assistance, American
2
Muslim prisoners
2
Online social networks Political aspects
2
Prisons Security measures
2
Privacy, Right of Government policy
2
Radicalism
2
Radicalism Prevention
2
Refugees
2
Strategy
2
Syrians Emigration and immigration Government policy
2
Terrorism Computer network resources
2
Terrorists
2
United States Military policy
2
Visas Government policy
2
Domestic terrorism Prevention Government policy
1
Extremist Web sites
1
In mass media
1
Internet Political aspects
1
Muslims
1
Public-private sector cooperation
1
Radicalization Computer network resources
1
Radicalization Prevention Government policy
1
Security, International
1
Subversive activities
1
Terrorists Recruiting Computer network resources
1