Iraq is in a period of seemingly relentless violence, much of it stemming from discord between Sunni and Shiite Muslims. July was the deadliest month in Iraq since the peak of sectarian violence in 2006 and 2007.
MORE: http://www.cnn.com/2013/08/06/world/meast/iraq-violence/index.html
See also...
Casualties mount at alarming rate in Iraq
http://www.cnn.com/2013/08/02/world/meast/iraq-attacks/index.html
At least 13 killed in key Iraqi cities
http://www.cnn.com/2013/08/05/world/asia/iraq-unrest/index.html