Violence has been on the rise across Iraq since a deadly crackdown by government forces on a Sunni protest camp in April, and attacks against civilians and security forces notably spiked during Ramadan. The surge of attacks has sparked fears that the country could spiral into a new round of widespread sectarian bloodshed similar to that which brought the country to the edge of civil war in 2006 and 2007. In the holy Shiite city of Karbala, police said four people were killed in a car bomb attack near a cafe at night. Karbala is 80 kilometres (50 miles) south...