Violence has reached a level not seen since 2008, and militants, including those linked to Al-Qaeda, frequently target Iraqi security forces and other government employees.
Gunmen killed six people in the northern city of Mosul today, while five people were shot dead in and near the city the day before.
In Baghdad, a roadside bomb in the Ghazaliyah area killed at least three people and wounded 11 today, and another killed four people and wounded at least nine in Madain, south of the capital.
Anbar province, west of Baghdad, was hit by a series of attacks last night that killed 28 people.
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Four of them struck targets in and around the town of Rutba, about 110 kilometres (70 miles) from the border with Syria.
A suicide bomber detonated a tanker truck loaded with explosives at a police checkpoint east of the town, militants armed with heavy weapons struck the police station in Rutba itself and another bomber detonated a vehicle at a police checkpoint to its west.
Those attacks killed 18 police and wounded 25, while three civilians died when another suicide bomber blew up a tanker truck on a bridge west of Rutba.
The violence was just the latest in a series of coordinated attacks to hit Anbar.
On Monday, suicide bombers attacked the police and electricity department headquarters in Fallujah, another city there, after which militants hit the police station with gunfire, mortar rounds and rocket-propelled grenades, and clashed with police.
The violence killed two police and wounded four others.
And on Sunday, eight suicide bombers attacked government buildings in Rawa, a town north of Fallujah, killing eight people, including three members of the local council and three police.