Prime Minister Nuri al-Maliki has vowed to press on with his anti-insurgency campaign, which has reportedly led to the arrest of hundreds of alleged militants and the killing of dozens.
But analysts and diplomats say authorities have failed to tackle the root causes of Iraq's worst violence since 2008: anger in the Sunni Arab community over perceived ill treatment by the Shiite-led authorities and security forces.
Today's violence struck the Baghdad area and in predominantly Sunni Arab towns and cities to the north, but the deadliest of the attacks hit the capital.
The blasts struck a variety of neighbourhoods across the city, and were the latest in a burgeoning trend of militant attacks in the afternoon and evening in Baghdad.
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In previous years, deadly attacks have typically struck during the morning rush-hour when much of the capital is in gridlock.
Attacks today also hit Salaheddin, Nineveh and Diyala provinces to the north of Baghdad, security and medical officials said.
Elsewhere, a car bomb near the town of Balad killed five people and wounded 21 others, among them a senior judge who was the apparent target of the blast.
In restive Nineveh province, gunmen opened fire on a van ferrying soldiers from Baghdad to their unit in the provincial capital Mosul, killing five of them.
Also in Nineveh, three separate attacks by gunmen left a soldier and two civilians dead, including a member of the Shabak minority.