At least 195 people were killed and 116 were wounded.
Kurdish Peshmerga fighters claim to have secured locations within 10 miles and on three sides of Mosul.
In Baghdad, a mortar attack killed seven people and wounded 19 more in Shula. Later, a second attack over in Sabi al-Bore left three dead and six wounded. A bomb killed two people and wounded eight more. A dumped body was found. A bomb southwest of the capital left seven dead and 17 wounded.
In Hawija, airstrikes killed four municipal workers and 12 militants.
Two internally displaced refugees were killed in Tuz Khormato.
A bomb in Husseiniya killed one person and wounded four more.
A second soldier is now reported dead from attempting to defuse bombs in Taji.
In Muqdadiya, gunmen killed a former Sahwa member.
Six people were wounded during a mortar attack in Amiriyat al-Falluja.
A bomb wounded six people in Madaen.
In Salah ad-Din province, five militiamen were wounded when they entered a booby-trapped home.
A car bomb in Mkeshiefa left five security personnel with injuries.
A bomb wounded three people in Haswa.
Militants kidnapped three people, including the nephew of a lawmaker, in Diyala province.
Seventy militants were killed during clashes in al-Dour near Tikrit.
Tribal fighters in Horan killed over 30 militants with help from Coalition forces.
In Mosul, airstrikes killed 21 militants.
Airstrikes killed 16 militants in Ramadi.
Nine militants were killed during an attack on a checkpoint near Haditha.
Six militants were killed on a highway between Haditha and Baiji.