Elle Fanning and Alessandro Nivola have joined Sally Potter's cold war story, Bomb.

The actress plays a teenage rebel who wants to save the world from nuclear annihilation, but as the cold war meets the sexual revolution, it's her family that threatens to explode. Alessandro Nivola plays a free thinking, charismatic writer in 1960s London who has a fallout with his teen daughter when he has an affair with her best friend.

The director had this to say about Elle Fanning:

"Elle has a subtlety and range beyond her years. Her unaffected enthusiasm for work is a joy. She can move you to tears and then light up the room with her radiant smile, the perfect presence at the center of this volatile story."

No production date has been set for the film.