hello and welcome to the programme which brings together some of the uk s leading commentators, bbc specialists and the foreign correspondents writing, blogging and broadcasting to audiences back home from the dateline london. this week, a taxing question for the g20 making multinationals pay theirfair share, and is the head of the imf naming and shaming the g7 over vaccination? i am joined byjeffrey kaufman, a news anchor in both his native canada and the united states as well as a much travelled foreign correspondent. isabel hilton, newspaper columnist and broadcaster who founded china dialogue, an independent organisation trying to foster greater understanding of china and improve its environment. and you see him there, our bbc business editor simonjack,