1 / 14
Iraqi security forces inspect the site of a car bomb attack in Basra, 340 miles (550 kilometers) southeast of Baghdad, Iraq, Sunday, Sept. 15, 2013. A new wave of insurgent attacks, mostly car bombs targeting Shiite-dominated cities in central and southern Iraq, killed and wounded scores of people, officials said. (AP Photo/ Nabil al-Jurani)

Iraq bombing attacks

Car and roadside bombs in Baghdad and predominantly Shi'ite provinces of Iraq killed at least 21 people on Sunday Sept. 15, 2013, police sources said.

No group immediately claimed responsibility of Sunday's the attacks, which appeared coordinated, but Sunni Islamist insurgents, including an al Qaeda affiliate, have been regaining momentum in recent months.

More than two years of civil war in neighboring Syria have aggravated deep-rooted sectarian divisions in Iraq, fraying an uneasy government coalition of Shi'ite, Sunni and ethnic Kurdish factions. (Reuters)