Senegal's President Macky Sall announces he will not seek third term in office

<p>In tonight's edition: Senegal's Macky Sall rules out running for president again, after months of tension over suggestions that he was considering a third term in office. In Mozambique, residents begin returning to Cabo Delgado, on the northern coast, after years of a deadly Islamist insurgency. And we look at digital opportunities in Turkana's desert in Kenya, where an NGO has built a university despite the tough climate. </p>