20:30HARDtalkHARDtalk Review of the Year 2015BBC World News Duration: 30 minutes Thu 31st Dec 2015, 20:30 on BBC WORLD NEWS North AmericaHARDtalk's Stephen Sackur looks back on the big stories of 2015. Show more ContributorsPresenter:Stephen SackurGenresFactualFormatsDiscussion & TalkBrandHARDtalk Source: BBC Online