Correspondents worldwide: Owen Bennett-Jones attends a Christian church service in Waziristan, Pakistan's Taliban country; Mark Tully considers whether India's secular tradition is under threat now the Hindu nationalist BJP has been voted in to power; Justin Rowlatt watches the Brazilian authorities trying to protect 'the most endangered tribe on the planet'; Thomas Fessy visits a ski shop on the edge of the Sahara Desert in Niger and on 'Good Neighbours Day' in France, Joanna Robertson finds suspicion, hostility, grievance and gossip alive and well in the apartment blocks of Paris. Programme produced by Tony Grant.