Reporters worldwide provide context to the week's news. Today: South Africa's ANC at the crossroads? As the party prepares for conference, its figurehead Nelson Mandela in fragile health, Andrew Harding reads the political runes at a critical time for the country. Allan Little is in the Polish city of Wroclaw observing how old allegiances and old identities are emerging in the new Europe. Now what's the attraction of the 'mitten' or 'hairy' crab? At this time of year in eastern China they're much in demand and Fuchsia Dunlop's been finding out why. Not many of our correspondents have got to meet the president of Equatorial Guinea, Teodoro Obiang. Stephen Sackur has though and asked him questions the president thought impertinent and malicious. And is getting dementia really the end of the world? The Dutch authorities have created a village for dementia sufferers which is pioneering a new sort of care.