North Korea's economy accelerated at its fastest pace in 17 years last year. Jean Lee of the Woodrow Wilson Center assesses the figures. And amid reports that US citizens are to be banned from travelling toNorth Korea, we find out more from Matt Kulesza of Young Pioneer Tours, which arranges visits to the country. Also in the programme, the BBC's Manuela Saragosa reports from Sicily, where EU agricultural subsidies may be helping to keep the mafia alive. Chinese internet entrepreneur Jack Ma of Alibaba has received a rock star's welcome in East Africa. Laban-Cliff Onserio is a business news presenter on NTV Kenya and tells us why Mr Ma is such a hero there. Plus we look back at all the week's big business stories with Carl Riccadonna of Bloomberg Intelligence in New York, and Riva Gold at Dow Jones in London.