Christchurch mayor: 'we are determined to remain united'

At least 49 people were killed in a shooting targeting two mosques in the New Zealand city of Christchurch. As the world reacts to the attack, we speak to the mayor of Christchurch Lianne Dalziel.

Also in the programme: why protests continue in Algeria; and after another busy week in British politics, what next for Brexit?

(Photo: Locals lay flowers and condolences at the Huda Mosque in tribute to those killed and injured at the Al Huda Mosque. Credit: Dianne Manson/Getty Images)