Brad Pitt and Angelina Jolie attended a press conference on Monday to discuss A Mighty Heart. Jolie admitted she had fears about taking on the project and the role of Mariane Pearl, whose husband, Wall Street Journal reporter Daniel Pearl, 38, was killed by Islamic militants in Pakistan in February 2002 reports PEOPLE

"I was very, very nervous to get it right," said Jolie. Pitt, 43, and Jolie, 31, are staying at the Hotel du Cap, in a villa with their four children: Maddox, 5; Zahara, 2; Pax, 3; and Shiloh, who turns 1 this coming Sunday. "We got here yesterday, and we had a beautiful day with our kids," said Jolie, who flew in from the Czech Republic, where she is filming the movie Wanted, with Morgan Freeman. "We've been playing with them since the moment we landed, and we plan to go home to them as soon as we are done with this."

Pitt said he was captivated by the Pearl story from the moment he started following it on CNN. "It was our goal to see this thing through," said Pitt. "And to fight hatred." "As a father, too, I look at my kids and realize they will inherit this world," said Pitt. "And we want to do everything we can to throw our weight in and make it a little bit better.