A wave of attacks on Sunday killed 11 people, including five soldiers , Iraqi security officials said amid growing discontent that a government scheme to curb violence in Iraq is not working.
Prime Minister Nuri Al Maliki has vowed to continue with an anti-insurgent campaign, which is one of the biggest since US forces withdrew from Iraq in December 2011, but analysts and diplomats say authorities have repeatedly failed to address the root causes of the violence.
Sunday's violence struck north of Baghdad, in predominantly Sunni areas of Iraq.
Five soliders were killed in the deadliest attack, which struck in Nineveh province, when gunmen opened fire on a van ferrying soldiers from Baghdad to their unit in the provincial capital Mosul, an army first lieutenant and a doctor told AFP.
Also in Nineveh, two separate attacks by unidentified gunmen left two civilians dead, including a member of the Shabak minority, police and medical officials told AFP.
The 30,000-strong Shabak community mostly lives near Iraq's border with Turkey, AFP reported.
Bombs rippled through the north of Baghdad on Sunday, killing four people - a child and three nurses - and wounded 21 others , including a senior judge, police and doctors told AFP.
Violence has markedly increased in Iraq this year, with attacks killing more than 3,600 people since the beginning of 2013, according to figures compiled by AFP.
Analysts and diplomats link the upsurge of attack to anger among Iraq's Sunni minority over their alleged ill-treatment at the hands of the Shiite-led authorities, which they say has given Sunni militant groups more room to recruit and carry out attacks.