In pictures: Iraq's neighbourhood patrols

Mohamad's mother Samera, 51 (not pictured), says she lives in constant fear.

"No one knows where the violence and attacks will come from. No one knows anything. I'm completely on edge until the boys come home.

"Things have changed so much. The separation has become very deep. We don't know who brought it upon us.

"We lived in total safety, our door was open all night. Now even if the door is closed and locked, you're nowhere near safe."