Two months ago, Rupert Murdoch brought in Emma Tucker of the Sunday Times of London as the new editor-in-chief of The Wall Street Journal. Tucker “had never worked in America before and hardly knew her way around the city, let alone her own newsroom,” New York’s Shawn McCreesh writes in this profile. Her new staff was already skeptical. She’d replaced Journal lifer Matt Murray — the American who took over after the previous Murdoch-imported Brit, brazenly pro-Trump and high-handed, had caused a rebellion in the ranks. Then, two months into Tucker’s regime, reporter Evan Gershkovich was arrested by the FSB and charged with espionage in Russia. Now, Tucker faces the ultimate challenge as an editor: keeping her reporter in the news while leading the effort to stand up for press freedom at a perilous moment.