From the Wall Street Journal, on the butchers who carried out last week’s attack in San Bernardino: “Agents are pursuing ‘the very real possibility’ that Ms. Malik was the catalyst for the violence, said one official. So far her husband ‘seems like someone who was searching for answers,’ the official said. . . An initial review of the couple’s online activity indicates one or both explored propaganda from al Qaeda and the Nusra Front, a terror group fighting in Syria, officials said.”