"Brad's an extraordinary father," Jolie, 35, tells PEOPLE in this week's issue. "We have each other's backs."
The teamwork of the actress and Pitt, 46, comes in handy when dealing with settling differences between kids Maddox, 8, Pax, 6, Zahara, 5, Shiloh, 4, and 2-year-old twins Knox and Vivienne, says Jolie.
"They can't go behind one [parent] to the other,” she says. "Not one of us is softer than the other."
The actress, whose new political thriller Salt opens Friday, also talks about tackling her own stunts in the film. "I happen to like heights, so we found moments where I can use that," she says.
One thing that does scare her: the idea of her kids becoming teenagers.
"I break out into a sweat at just the thought."
For much more on Angelina Jolie, pick up this week’s issue of PEOPLE, on newsstands Friday