Russian President Vladimir Putin has always been a paranoid man. We know, for example, that he has long eschewed the use of a personal cellphone , all too aware of how easily they can be tracked. Yet a Kremlin document recently leaked to the press by a European intelligence service lays bare a whole new level of suspicion . Visitors can only approach him after they’ve gone through two layers of screening. His bodyguards now exercise full control over his schedule of appearances; they’ve