Why is Marji angry at her father?

Later that evening, Marjane declares that, “We have to bomb Baghdad!” Her parents tell her that all the fighter jet pilots had been imprisoned during the coup d’état and that they would have to be released from prison first. Marjane remembers that one of her friend’s fathers is a pilot but her father tells her that he had been imprisoned. Marjane is angry with her father for being a defeatist.