Will a west African single currency work?

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The Ecowas countries are aiming to roll out a regional single currency - the Eco - in 2027. But past launch dates have come and gone, so will they meet the new target date and will a single currency work? Malawi's agriculture minister refutes the claim that a global decline in tobacco use is affecting farmers in the country. But is his government also helping tobacco farmers to diversify? And South Africa is running out of snake antivenom. What does that mean not only for South Africa, but other countries on the continent? Presenter: Charles Gitonga Technical Producer: Philip Bull Producers: Sunita Nahar and Nyasha Michelle in London. Blessing Aderogba in Lagos Senior Journalist: Patricia Whitehorne Editors: Andre Lombard and Alice Muthengi