TALLINN, Estonia (AP) — Relatives and allies of an opposition politician imprisoned in Russia say they haven’t heard from him in a month and are worried about his well-being. He was one of the few opposition politicians to be allowed on the ballot, and his team ran his campaign while he was behind bars. Asked whether there was any point in opposition activism in recent years, given that the Kremlin either imprisoned or drove most activists out of Russia Pivovarov said “there most certainly was,” but he acknowledged some things could have been done differently