President Obama says airstrikes are consistent with war powers act.
The U.S. is currently conducting airstrikes near the Mosul dam in support of Kurdish troops.
Kurds say they have retaken control of Mosul dam.
Cameron urges stepped up military aid to Iraq in the fight against Islamic State militants.
Kurdish militants have trained hundreds of Yazidi volunteers at camps inside Syria to fight Islamic State forces in Iraq.
U.S. fighter planes and drones struck targets as part of a campaign to dislodge militants from the hydroelectric power facility.
Thousands of Twitter users turned to humor to vent their frustrations about the Islamic State.
The Sunni insurgents made striking advances in Syria, seizing three villages near Aleppo, while slaying 700 members of the same tribe.
Officials estimate more than 1,700 people from France, Germany and the U.K. have joined the Islamic State.
After weeks of ISIS gains, U.S., Iraqi and Kurdish forces are attempting to take back Mosul Dam from the Islamic State.
Islamic State insurgents "massacred" some 80 members of Iraq's Yazidi minority in a village in the country's north, a Yazidi lawmaker and two Kurdish officials said on Friday.
For the first time since ISIS began taking over certain parts of Iraq, Sunni tribes have taken up arms against the Sunni militant group.
After taking Iraq's second-biggest city, the Islamic militant group added sophisticated U.S. hardware to its weapons collection.
President Obama told reporters he didn't expect the U.S. to have to stage an evacuation of the mountain, where thousands of members of the Yazidi religious minority had been trapped by militants, or to continue humanitarian airdrops.
The announcement came four days after Iraqi President Fuad Masum nominated Haider al-Abadi to be Iraq’s new prime minister.
In the past 24 hours, ISIS has taken over five towns north of Aleppo and could capture positions controlling border traffic with Turkey.
The U.S., which had sent a mission to Mount Sinjar to help the Yazidis, said that the situation was better than feared.
In 2011, Saudi Arabia had provided $10 million as seed money to establish the United Nations Counter Terrorism Centre.
Barack Obama doesn't want to commit to a ground attack in Iraq again. But relying only on airstrikes, experts say, won't beat ISIS.
Nuri al-Maliki’s Dawa party called on Iraqi politicians to accept his replacement, even though he refused to step aside.
After seizing five oil fields and Iraq's biggest dam, Sunni militants bent on creating an Islamic empire in the Middle East now control yet another powerful economic weapon, wheat supplies, Reuters said in an exclusive report.
With thousands of Yazidi people trapped on a mountain in Iraq, President Obama will weigh options next week.