you're watching bbc news, i'm ben boulos. our top stories. a state of emergency is declared in haiti after a powerful earthquake, measuring 7.2 magnitude. at least 29 people have been killed. the last major city in northern afghanistan — mazar—i—sharif — reportedly falls to the taliban, as president ghani says that remobilising the military is his top priority. translation: our dear country, afghanistan, is in serious - danger of instability. the reintegration of the security and defence forces is our priority and we are taking serious measures to deal with this. in the uk there are questions for police about why it chose to return a shotgun licence to the man who killed five people in the uk's worst mass shooting since 2010.