Iraq's rising violence explained in 90 seconds
29 October 2013 Last updated at 09:46 GMT
Violence in Iraq is on the increase, as Monday's car bombs which left at least 39 people dead in Baghdad demonstrate.
It happened on the same day a bomber blew himself up killing at least 14.
In this 90 second explainer, BBC News examines the reason for the rise in deadly attacks and looks at what challenges lie ahead for the country.