Chronology
January
- January 8 – A suicide bomber targets a police checkpoint in the town of Youssifiyah, killing seven people. [1]
- January 21 - Beginning of the Mosul Offensive in which Peshmerga forces captured large amount of territory surrounding Mosul. [2]
- January 25 As many as 21 Arab-Iraqi civilians were killed in the village of Kocho by Yazidi militias in retaliation for the Sinjar massacre. [3]
- January 26 – Iraqi forces recapture the entire province of Diyala from Islamic State. [4]
- January 29 – Battle of Kirkuk (2015) begins.
February
March
- March 2 – Second Battle of Tikrit begins. [7]
- March 25 – American airstrikes on Tikrit, several Shiite militias go on strike.[ citation needed ]
April
- April – May: Al-Karmah offensive
- April 1 – After a month of hard fighting, Iranians, Iraqis and Shiite militia overcome ISIL fighters and take Tikrit.[ citation needed ]
May
- May 15: ISIL seizes control of the main Government building and city centre in Ramadi, the provincial capital of Anbar Province.[ citation needed ]
- May 20: ISIL captures Ramadi.
June
July
- July 13: Anbar offensive begins. [10]
- July 17: A suicide bomber detonated a car bomb in a marketplace in the city of Khan Bani Saad during Eid al-Fitr celebrations, killing 120–130 people and injuring 130 more. Twenty more people were reported missing after the bombing. [11] [12]
- July 23: Turkey begins bombing alleged PKK bases in Northern Iraq.
August
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=== August 1 === Kurdish Peshmerga forces launched a new offensive against ISIS near Kirkuk and Sinjar. The US-led coalition conducted multiple airstrikes around Mosul targeting ISIS facilities. [13]
=== August 2 === Iraqi forces advanced south of Ramadi in Anbar Province with support from US airstrikes. Prime Minister Haider al-Abadi announced an upcoming major reform plan amid widespread anti-corruption protests. [14]
=== August 3 === On the anniversary of the Yazidi genocide, UN officials reaffirmed that ISIS crimes against the Yazidis constitute genocide. Kurdish forces fortified Sinjar Mountain against possible ISIS attacks. [15]
=== August 4 === ISIS executed dozens of civilians in Falluja for allegedly collaborating with Iraqi forces. Anti-government protests intensified in Baghdad amid a severe heatwave. [16]
=== August 5 === Iraqi forces made limited advances around Haditha in Anbar Province. Shiite militias under the Popular Mobilization Forces launched operations west of Baghdad targeting ISIS cells. [17]
=== August 6 === Coalition airstrikes targeted ISIS positions in Mosul, reportedly causing heavy casualties. Political pressure mounted on Prime Minister Abadi to implement reforms. [18]
=== August 7 === Thousands of protesters gathered in Tahrir Square, Baghdad, demanding an end to sectarian quotas and systemic corruption. Grand Ayatollah Ali al-Sistani publicly endorsed the protests. [19]
=== August 8 === Prime Minister Abadi presented a seven-point reform plan, including ending sectarian quotas and downsizing the government. ISIS shelled Kurdish-held villages near Kirkuk. [20]
=== August 9 === Iraqi Parliament voted unanimously to approve Abadi’s proposed reforms. Mass rallies across the country showed rare unity among different ethnic and sectarian groups. [21]
=== August 10 === The Iraqi government began abolishing senior governmental posts, including the positions of vice presidents and deputy prime ministers. ISIS executed alleged defectors in Mosul. [22]
=== August 11 === Iraqi forces retook the University of Anbar in Ramadi. ISIS counterattacks south of Mosul were repelled by Kurdish forces. [23]
=== August 12 === Fresh protests erupted in Baghdad, calling for reforms within the judiciary system. ISIS car bomb attacks killed dozens in mainly Shiite areas of the capital. [24]
=== August 13 === ISIS suicide bombers attacked a Shiite mosque in Baqubah, Diyala province, killing at least 20 people. Iraqi forces consolidated control over key supply routes in Anbar Province. [25]
- August 13: 2015 Baghdad market truck bombing
- August 21: ISIS imposes a curfew on Mosul after residents spray anti-ISIS graffiti on several walls. [26]
September
October
- On October 22, Iraqi Security forces and the Popular Mobilization forces finished recapturing the city of Baiji, Iraq, its oil refinery and the surrounding region.
November
- November 13: Kurdish forces take control of Sinjar from ISIS after it was seized by IS forces in August 2014. [27]
December
- December 16–17: Nineveh Plains offensive in which hundreds of ISIL fighters mount an attack against Kurdish positions but are repelled. [28]
