Hagel is the first U.S. secretary of defense to visit Iraq since President Barack Obama ordered American troops out of the country in 2011.
The Australian government has accused ISIS of tricking foreign recruits into believing that they play a key role in a religious crusade.
In the coming months, the number of U.S. troops alone in Iraq will grow to over 3,000.
A senior al Qaeda leader denounced beheadings and outlined the group's strategy to defeat the U.S. in a video "press conference."
The failed rescue attempt of Luke Somers is just the latest such operation to go bad.
Pierre Korkie, a South African national being held by al Qaeda militants since May 2013, was killed in a failed attempt to rescue Luke Somers.
A Canadian official asked the public to remain vigilant following calls for lone-wolf attacks inside the country.
Israel allegedly bombed a warehouse near Damascus airport loaded with Russian missile system components.
Four suspected militants were killed and two injured when a U.S. drone strike hit a house in northwest Pakistan Sunday, Pakistani officials said.
“There is zero possibility that the hostages were victims of a crossfire,” a U.S. military official said.
The Islamist radicals, who pledge loyalty to ISIS, have reportedly recruited women suicide bombers.
Adnan Shukrijumah, believed to be al Qaeda’s chief of global operations, was wanted in the U.S. on charges related to a 2009 terrorism plot.
Lorenzo Vinciguerra, 49, was one of the two Europeans abducted by the Abu Sayyaf group nearly three years ago.
Blacks were arrested nearly three times as much as whites for drug crimes in Cleveland, despite data that shows both demographics use drugs at the same rate.
In a video appeal, Luke Somers' mother and brother urged al Qaeda militants holding him to let them see their family member again.
Abd Al-Baset Azzouz was reportedly arrested in Turkey and accused of participating in the 2012 attack on the U.S. embassy in Benghazi, Libya.
The findings come a month after Cleveland police shot a 12-year-old black boy playing with a toy gun.
Al Qaeda’s Yemeni offshoot said it would execute Luke Somers unless their demands were met by the U.S. government.
Lebanese officials claimed that al-Baghdadi's daughter and ex-wife were among those detained near a Syrian border crossing.
Two of the men were arrested Thursday morning while five others have been detained since earlier this week.
The first declaration under Australia's new anti-terror laws seeks to deter its citizens from participating in the Syrian conflict.
Al Qaeda’s Yemen affiliate said in a video that Luke Somers would meet his "inevitable fate" if their demands were not met by U.S. authorities.