The wife of British hostage Alan Henning has called on “the people of the Islamic State to see it in their hearts to release my husband”, describing him as a “peaceful, selfless man”.
The militant Islamic State group has released a video warning the US that fighters await in Iraq if Barack Obama sends troops there.
The US military has stepped up its campaign against Islamic State (IS) militants with five airstrikes across Iraq.
US president Barack Obama has told congressional leaders that he has the authority he needs to carry out a broader campaign to root out the violent extremists in Iraq and Syria.
The US military says it has launched airstrikes around Haditha dam in western Iraq, targeting Islamic State (IS) insurgents for the first time in the area as the group tries to capture the vital dam.
Militants from the Islamic State (IS) group carried out a mass killing of hundreds of Iraqi soldiers captured when the extremists overran a military base north of Baghdad in June, a leading international watchdog has said.
Amnesty International says it has uncovered "gruesome" evidence of ethnic cleansing in northern Iraq by Islamic State (IS) militants.
Aid has begun to flow to a small northern Shiite town in Iraq, a day after security forces backed by Iran-allied Shiite militias and US airstrikes broke a two-month siege by Sunni militants.
The Pentagon has revealed its military operations in Iraq have cost around €560m since mid-June.
At least 11 people were killed and 31 others injured when a car bomb exploded in a busy Shiite area of eastern Baghdad, Iraqi officials said.
Nouri Maliki has given up his post as Iraq’s prime minister to Haider Abadi, state television reported today – a move which could end a political deadlock that plunged Baghdad into uncertainty as the country fights a Sunni militant insurgency.
A volunteer said she had “never seen so many people scramble for survival” as she helped drop aid to the tens of thousands of Yazidis trapped on Mount Sinjar in northern Iraq.
Another 130 US troops have arrived in Iraq on what the Pentagon described as a temporary mission to assess the scope of the humanitarian crisis facing thousands of displaced civilians trapped on Sinjar Mountain.
Iraq is facing a fierce political power struggle even as the country battles extremists in the north and west, after its president went over the head of incumbent prime minister Nouri Maliki and picked another politician to form a new government.
The grandfather of a seven-year-old boy pictured clutching the severed head of a Syrian soldier has urged the Australian government to bring the child home.
A new round of airstrikes by US fighter jets and unmanned drones has targeted Islamic militants in Iraq.
President Barack Obama has authorised US airstrikes in northern Iraq, warning they would be launched if needed to defend Americans from advancing Islamic militants and protect civilians under siege.
At least 27 people were killed in a series of bombings across Baghdad today, including three over a span of less than 10 minutes.
Some 50 bodies have been discovered outside a city south of Baghdad, many of them blindfolded and with their hands bound.
Dozens of Indian nurses stranded in territory held by Islamic extremists in Iraq returned home to southern India today aboard a special flight, officials said.
Sunni militants have blitzed through the vast desert of western Iraq, capturing four towns and three border crossings and deepening the predicament of the Shiite-led government in Baghdad led by Nouri Maliki.
Sunni fighters led by an al-Qaeda breakaway group expanded their offensive in a volatile western province, capturing three strategic towns and the first border crossing with Syria to fall on the Iraqi side.
President Barack Obama has said the US is prepared to take targeted military action in Iraq if it would help fight a growing threat from extremist militants.
Sunni militants have captured the northern Iraqi town of Tal Afar, close to the Syrian border, the mayor and residents said today.
The United States has ordered an aircraft carrier into the Persian Gulf as it laid out specific ways for Iraq to show it is united in order to gain assistance in its fight against Islamic insurgents.
Islamic militants have vowed to march on Baghdad to settle old scores after seizing a number of cities and towns in Iraq.
Al-Qaida-inspired militants have pushed deeper into Iraq’s Sunni heartland, conquering Saddam Hussein’s hometown of Tikrit as soldiers and security forces yielded ground once controlled by US forces.
Al Qaida-inspired militants have seized control of Saddam Hussein’s home town of Tikrit.
The governor of an Iraqi province overrun with militants says authorities are determined to recapture the northern city of Mosul after large parts of it were seized by Islamist insurgents.
The United States has condemned a siege of Iraq’s second-largest city by Islamic militants “in the strongest possible terms.”
A series of car bombs exploded across Iraq’s capital tonight, killing at least 52 people in a day of violence that saw militants storm a university in the country’s restive Anbar province and take dozens hostage, authorities said.
At least 12 people have been killed in a series of bombings around Baghdad today, Iraqi officials said.
Fourteen people have died in three separate bombings in the Iraqi capital.
A new wave of bombings has caused carnage in Iraq’s capital, Baghdad, killing at least 20 people.
A senior Iraqi military commander has said it will take a few days to fully dislodge al-Qaida-linked fighters from two key western cities.
A series of attacks in Baghdad has killed at least five people and wounded 13, officials said.
A wave of attacks, mostly by car bombs, has hit mainly Shiite and commercial areas of Baghdad, killing at least 24 people and wounding 87.
At least 19 Iraqi soldiers have been killed in a dual suicide car bombing at a military base just north of the capital Baghdad.
At least seven policemen have been killed and 14 injured after a suicide attack in eastern Iraq, officials say.
A twin suicide attack targeting soldiers and anti-al Qaida militiamen in central Iraq has killed 12 people, officials said.
A car bomb and an assault on a local council building in Iraq have killed at least 10 people, according to officials.
Suicide bombings tore through a Shiite mosque south of Baghdad and the relatively safe Kurdish area in the north as a wave of attacks killed at least 46 people across Iraq, officials said.
The death toll from a bombing at a funeral in a Shiite neighbourhood in Baghdad has risen to 51, Iraq officials said.
A new wave of insurgent attacks, mostly car bombs targeting Shiite-dominated cities in central and southern Iraq, killed at least 35 people today, officials said.
Gunmen attacked two Shiite families in a largely Sunni area south of Iraq’s capital, Baghdad, killing 16, officials said today.
Twenty-three people have been killed in two car bomb attacks in Iraq, officials said.
At least 26 people have been killed and dozens of others injured in a wave of bombings in Shiite Muslim areas in and around Baghdad, Iraqi officials said.
A wave of bombings around the Iraqi capital of Baghdad has killed 33 people celebrating the Eid al-Fitr holiday.
At least nine people have been killed in bomb attacks on two mosques in Baghdad, Iraqi officials said today.
Twelve people have been killed in a suicide attack on an army patrol in northern Iraq, officials said today.
A double suicide bombing attack at a Shiite mosque in Baghdad has killed at least 24 people and wounded dozens more.
Bombs struck Sunni areas in Baghdad and surrounding areas today, killing at least 76 people in the deadliest day in Iraq in more than eight months, officials said today.
A car bomb in a Shiite suburb of Baghdad has killed four people and wounded 12 others.
A suicide bomber has blown himself up at a lunch hosted by a Sunni candidate in Iraq’s upcoming regional elections, killing 20 people, officials said.
At least 56 people have been killed and more than 200 others injured in a wave of bombings across Baghdad and nearby towns, Iraqi officials said today.
Eight people have been killed and 21 others injured after two car bombs exploded in the south of Iraq, according to authorities.
Five people were killed and dozens of others injured when two car bombs exploded at a livestock market in southern Iraq, an official said today.
A series of car bombs exploded within minutes of each other as Iraqis were out shopping in and around Baghdad on Sunday, killing at least 35 people in mainly Shiite areas.
A series of car bombs exploded within minutes of each other in and around Baghdad today, killing at least 28 people and wounding dozens in overwhelmingly Shiite areas.
Assailants fired rockets at a refugee camp for an Iranian exile group outside Baghdad, killing six people and wounding more than 40.