She’s an American who grew up in Illinois, she’s three months pregnant, and she’s not quite sure how she and her Libyan husband got to be holed up in a mosque right on the frontline in Muammar Qaddafi’s hometown of Sirte. “I just want to get out of here, it’s dangerous,” she said Sunday, as NATO warplanes bombed the city a day after fighters for the country’s new regime engaged in deadly street battles with troops loyal to the ousted dictator. The street fights continued on the eastern edge of the city, but fighters withdrew on the western side to...