Brad Pitt, Angelina Jolie LAX

Well, one third of their kids, anyway!

On Saturday afternoon Brad Pitt and Angelina Jolie returned from London with Zahara and Maddox, where the actress was serving as the co-host of the Global Summit to End Sexual Violence in Conflict this past week.

Jolie, who is a special envoy of the United Nations High Commissioner for Refugees (UNHCR), was in the UK for four days for the conference, working with British Foreign Secretary William Hague to raise awareness over sexual violence in war zones. "It is a myth that rape is an inevitable part of conflict. It is a weapon of war aimed at civilians .. done to torture and humiliate people and often to very young children," Jolie said. "We need to see real commitment and go after the worst perpetrators, to fund proper protection for vulnerable people, and to step in to help the worst-affected countries."