AL-QAEDA

According to a criminal complaint filed with U.S. District Court in Colorado, Shannon Maureen Conley knew the group, the Islamic State of Iraq and the Levant, also known as ISIL or ISIS, was designated as a foreign terrorist organization. The group renamed itself "Islamic State" at the weekend.

The military had conducted airstrikes last week, in the first phase of operations to fight off the Pakistani Taliban.

"Calamity Will Befall US," warns the hashtag.

Indonesian retailers are cashing in on the Iraq crisis by selling ISIS merchandise, including "We Are All ISIS" T-shirts, online.

Pentagon aware of pictures showing U.S. Humvees in ISIS hands.

Armed drones have revolutionized warfare, but still leave many questions to be resolved.

Iraqi government forces are coming together to beat back a Sunni extremist group that has taken over significant regions.

"American forces will not return to combat in Iraq," the president said, calling those being deployed "military advisers."

ISIS, the organization that now controls northern Iraq, was until this winter a branch of al Qaeda. How did it become so powerful?

Global oil analysts are closely watching Iraq. Here's why.

"The reality is, U.S. and Iranian interests and goals do not align in Iraq," McCain said.

A long-expected military operation comes just a week after a deadly insurgent attack on the country's biggest airport.

Shakir Wahiyib's "Quranic quiz" lifted him from obscurity to feared terrorist.

Obama said he expects to make a decision in the days ahead, but it's ultimately up to the Iraqis to solve their problems.

ISIS is making its third attempt on Samarra, the Iraqi city home to the Shiite Al-Askari shrine whose bombing in 2006 led to sectarian violence.

Obama's ending of the war Bush began hasn't solved the problem of Iraq. The rise of ISIS proves it's an even bigger issue now.

The last known U.S. drone strike in the area was on Dec. 25, which killed four suspected terrorists at a compound near Miramshah.

The U.S. is considering options that include possibly providing "kinetic support" for the Iraqi military.

In 2009, the U.S. State Department reportedly announced a $500,000 bounty for the capture or killing of Khair Mundos.

Jihadists gained control of five areas west of the city of Kirkuk in Iraq.

At least 17 people were killed in what is believed to be the first such attack by an American citizen.