Is the tide turning against al-Shabab in Somalia?
It is nearly four years since the militant group al-Shabab was driven out of the Somali capital, Mogadishu and it has lost much of the territory it once controlled.
But it retains the ability to carry out high-profile attacks there, and in Kenya.
Somalia's government says it is weakening the leadership of al-Shabab, through a combination of American drone strikes and an amnesty programme for high-level defectors.
The BBC's Andrew Harding has been to Mogadishu - where he had exclusive access to one former al-Shabab commander.
25 May 2015