07:06WeekendUS and Russian Defence Chiefs Discuss Syrian ConflictBBC World Service Duration: 50 minutes Sat 19th Sep 2015, 07:06 on BBC World Service Americas and the CaribbeanUS Defence Secretary, Ash Carter, and his Russian counterpart, Sergei Shoigu, discuss tackling the Syrian conflict and threat from IS; and Alger Hiss: Traitor or victim?GenresNewsFormatsMagazines & ReviewsBrandWeekend Source: BBC Online