When Kremlin critic Vladimir Kara-Murza was suddenly moved to a detention center in Moscow from a Siberian prison, he thought he was being taken there to be shot. Opposition activist Ilya Yashin said he was warned by a security operative that he would die in prison if he returned to Russia. Neither was told they were being freed in a massive prisoner exchange with the West — the largest since the Cold War — when they were put on a bus to the airport Thursday, some still in prison garb.
