Amnesty International on Monday described as “unlawful and unwarranted” the detention by British authorities of the significant other of a journalist who worked with Edward Snowden. “It is utterly improbable that David Michael Miranda, a Brazilian national transiting through London, was detained at random, given the role his husband has played in revealing the truth about the unlawful nature of NSA surveillance,” said Widney Brown, the organization’s senior director of international law and policy. Miranda was detained while in transit in Heathrow Airport and was held in detention for nearly nine hours under the Terrorism Act 2000, which allows officers...