Hong Kong police clash with protesters in Yuen Long

Hong Kong police have fired tear gas at an unauthorised protest to condemn an attack by armed masked men in the city last week. We hear from one of the protesters injured in that attack.

Also in the programme: The prosecutor's office in Sudan says at least eight military officers will be charged with crimes against humanity over last month's killing of pro-democracy demonstrators. And we find out why wildfires are taking hold in the Arctic Circle.

(Photo: Protesters are seen during a stand-off with the police in the district of Yuen Long. Credit: Billy H.C. Kwok/Getty Images)