Papal visit presents unique security challenge

In midst of Syria buildup, Russian military is reminded of Afghanistan disaster

The Hunt: Major terror groups seek merger

Widows of ISIL terrorists attempt to strike back

The story of Ali Shukri Amin: How a Virginia teen came to support ISIL

The Hunt: Terrorist groups’ recruit of hackers

FBI: Serial robbers targeting area 7-Eleven stores

Secret Service director personally involved in pope’s security

Refugee crisis frays nerves and cooperation in Europe

Justice Department curtails secretive cellphone surveillance

U.S. security officials say passenger trains are secure

The Hunt: ISIS leader al-Baghdadi badly wounded

Exclusive: Iraqi official confirms ISIL leader al-Baghdadi badly wounded

Va. teen sentenced to over 11 years on terrorism charges

ISIL’s top cyber operative killed in drone strike