IS threatens lives of 2 Japanese hostages in new video (LIVE BLOG)
The militant group says it will kill them unless it receives $200 million in ransom.
IS jihadists free 200 elderly Yazidis in north Iraq
'We already have names for 196 and there could be some more," said Khodr Domli, a leading Yazidi rights activist.
Did the Islamic State commit genocide? The Yazidis and Kurds say they did
The government of the autonomous Kurdistan region in Iraq has begun a campaign to have IS attacks against Yazidis classified as genocide.
It's 2015. Time for some new US operations in Iraq and Afghanistan
America's major wars are technically over, but there are still plenty of boots on the ground. Here's a look at the missions guiding US engagement this year.
This animation shows you why cluster bombs are so devastating to civilians
The US once dropped explosives in Afghanistan that, before detonation, looked an awful lot like humanitarian rations. Here's why they're still a problem there and beyond.
The devastating legacy of unexploded US ordnance in Iraq
Iraq is one of the most bombed-out places in the world, where an estimated 50 million landmines and other munitions that could detonate at any time.
Meet the Yazidi family heading the fight against the Islamic State
Generations of the Shasho family have left comfortable lives in Europe to fight on the Yazidi front lines in Iraq.
Thousands of Yazidi girls and women are still held by the Islamic State
With professional forces slow to come to their aid, young women held by IS rely on smugglers and death-defying luck to break free.
Kurdish women line up to take on the Islamic State
Kurdish women join the PKK in droves to fight the Islamic State, which has captured and enslaved up to hundreds of Yazidi women.
The Islamic State is waging war on technocrats
'All my old colleagues, they’re all gone, fled to Turkey or the Kurdish areas,' explained one former businessman in Mosul.
Kurdish group fighting Islamic State tells America: Stop calling us terrorists
The Kurdistan Workers’ Party (PKK) has become a de facto ally of the US in its fight against IS. Now it wants to be taken off the State Department's terror list.
Iraq Kurd chief visits Mt. Sinjar after siege broken
'We did not expect to achieve all these victories,' said Iraqi Kurdish leader Massud Barzani.
Kurdish forces claim victory over Islamic State on Iraq's Mount Sinjar
'The siege on the mountain has been lifted,' a Kurdish official told reporters.
America is building a Sunni army in Iraq to take on the Islamic State
Impatient with the Iraqi government's failure to arm Sunni groups to tackle the Islamic State, the US is taking matters into its own hands.
Peter Kassig's beheading another sign of savagery from messianic killers who won't cease until stopped
News Analysis: But sending US troops into direct combat roles in Syria would be a mistake.
IS claims beheading of US aid worker Kassig
The Islamic State released a video Sunday that also showed the gruesome simultaneous beheadings of at least 18 men described as Syrian military personnel.
Iraq forces break jihadist siege of main oil refinery
Iraqi forces broke the months-long siege by the Islamic State as America's top officer flew in to discuss the possibility of expanded war.
Iraqi government forces are reportedly close to key refinery held by IS
Islamic State fighters seized the city of Baiji and surrounded the sprawling refinery in June during a lightning campaign through northern Iraq.
Extremist group that killed hundreds in Egypt pledges allegiance to the Islamic State
The 'caliphate' is growing.
The borders of the Middle East are being redrawn by force (VIDEO)
The Islamic State is trying to change the map created after World War I. America's Kurdish allies have a different outcome in mind.
The US just tried to take out the leader of the Islamic State
US airstrikes target a convoy of 10 armed trucks in Iraq. Abu Bakr al-Baghdadi may or may not have been in one of them.
They survived the Islamic State. Can they make it through the winter? (VIDEO)
After fleeing IS militants in Iraq, many Yazidis are surviving in makeshift shelters in the open air. Just wait till the snow comes.
CSI Baghdad: Meet the small forensics team struggling to deal with a new wave of violence in Iraq
The lack of a functioning forensics program means that many families are unable to identify their loved ones, and bombers escape justice.
Conflicting stories reveal depth of Iraq's sectarian war
To take steps toward peace, the international community must look beyond the surface struggle and into historic divisions between Arabs and Kurds.
The Islamic State's slave market
This video appears to show IS fighters discussing the buying and selling of Yazidi women.
Islamic State claims responsibility for 2 car bombings in Baghdad
The two Sunday bombings killed at least 18 people and wounded dozens more, security and medical officials said.
No direct combat for Iraqi Kurds in Kobani
Meanwhile, the Islamic State loses ground in Iraq.
The battle for Anbar could shape the future of Iraq. Here's why
The Islamic State has made gains in the province, and many fear Baghdad will be next.
In a second, a bomb destroys one man's dream of reopening his Baghdad hotel
Bombings across Iraq take lives and put others on hold.
5 reasons Turkey is dragging its feet in the fight against the Islamic State
Ankara's anti-Western rhetoric isn't new. Here's what is.
The US is just one of 23 countries battling the Islamic State
But it's the only Western nation that's bombing inside Syria.