Obama backs African trade development in Tanzania speech

US President Barack Obama has said he wants a "new model" for development during his first visit to Tanzania.

Mr Obama and his family were greeted by Tanzanian President Jakaya Kikwete and troupes of dancers as they arrived in the main city of Dar es Salaam.

In a speech on the last leg of his Africa tour, the US president said Tanzania had the potential to transform the region.

Gabriel Gatehouse reports.