People around the world have celebrated New Year 2017 in different ways.
A suicide truck bomb killed about 100 people, most of them Iranian Shi'ite pilgrims, at a petrol station in the city of Hilla 100 km (62 miles) south of Baghdad on November 24, police and medical sources said.
Islamic State expanded its attacks on October 24 against the army and Kurdish forces across Iraq, trying to relieve pressure on the militant group's defenses around Mosul, its last major urban stronghold in the country.
The United States expects Islamic State to use crude chemical weapons as it tries to repel an Iraqi-led offensive on the city of Mosul, although adding that the group's technical ability to develop such weapons is highly limited.
A blast caused by a fire at a weapons storage depot in eastern Baghdad on September 2 set off rockets that hit neighboring districts, killing at least four residents and injuring 14 others.
Iraq's Prime Minister Haider al-Abadi held talks on August 25 with visiting Syrian Foreign Minister Walid al-Muallem about securing their common border after a partial retreat by Islamic State militants.
Iraq said on August 21 it had hanged 36 militants sentenced to death over the mass killing of hundreds of mainly Shi'ite soldiers at a camp north of Baghdad two years ago.
At least nine people were killed and 32 wounded on July 12 when a car packed with explosives was detonated in a district just north of Baghdad, security and medical sources said.
Islamic State lost an area the size of Ireland - a quarter of its territory - to hostile forces in the last 18 months in Iraq and Syria and is likely to further step up attacks on civilians in coming months, IHS said in a report on July 10.
Islamic State claimed a triple suicide attack on July 7 evening near a Shi'ite mausoleum north of Baghdad, which killed at least 35 people and wounded 60 others, according to Iraqi security sources.
Nearly 120 people were killed and 200 wounded in two bombings overnight in Baghdad, most of them in a busy shopping area as residents celebrated Ramadan, police and medical sources said on July 3.
Iraqi forces on June 26 recaptured the last district of Falluja held by Islamic State militants and the commander of the operation declared the battle over following a month of fighting.
US-backed Iraqi forces fighting Islamic State militants in Falluja are advancing toward jihadist strongholds in western districts where they expect the final push to recapture the city will take place, the Iraqi commander said on June 20.
Tens of thousands of civilians stranded inside Islamic State-controlled Falluja are at risk of disease outbreaks as Iraqi government forces press their assault to retake the city, World Health Organization (WHO) official Ala Alwan said on June 16.
Islamic State's far-flung enemies in Syria and Iraq pressed ahead on June 8 with major advances on multiple fronts that have put some of the greatest pressure on the ultra-hardline Islamists since they declared their caliphate two years ago.
Islamic State fighters halted an Iraqi army assault on the city of Falluja with a counter-attack at its southern gates on May 31, while the United Nations warned of peril for civilians trapped in the city and used by militants as human shields.
Iraqi government forces fought Islamic State militants near Falluja on May 23 and bombarded central districts at the outset of an offensive to retake the longtime jihadist stronghold on the western approaches to the capital Baghdad.
Iraqi security forces opened fire on protesters who stormed into Baghdad's heavily fortified Green Zone on May 20 and entered the cabinet building, drawing calls for revolt from a powerful Shi'ite Muslim cleric.
Nine Iraqi soldiers were killed and nine more wounded on May 18 when a house rigged with explosives blew up south of Baghdad during a raid of suspected Islamic State militants, two army sources said.
At least 77 people were killed and more than 140 wounded by three bombings in Baghdad on May 17, extending the deadliest spate of attacks in the Iraqi capital so far this year and driving Shi'ite fighters into the streets to defend some areas.