Angelina Jolie, who is rumoured to be pregnant with twins, donned a helmet and flak jacket as she visited Iraq as part of her role as a UN goodwill ambassador.

The 32-year-old accompanied the U.S State Department on the trip to learn about the plight of 4 million displaced Iraqis.

Her partner Brad Pitt remains on dad duty in LA, where he was spotted yesterday with the couple's adopted daughter Zahara in tow.

Of her mission, Angelina has said: "There's lots of goodwill and lots of discussion, but there seems to be just a lot of talk at the moment, and a lot of pieces that need to be put together.

"I'm trying to figure out what they are.”

"What happens in Iraq and how Iraq settles in the years to come is going to affect the entire Middle East.

"It's in our best interest to address a humanitarian crisis on this scale because displacement can lead to a lot of instability and aggression."