Chicago's Deadly Summer of Violence

Last month saw the largest number of people killed by gun violence in the US city of Chicago in 23 years. Over the past weekend alone 65 people were shot in the city. The BBC's Ian Pannell has spent a week in two of Chicago's most violent neighbourhoods.

Syrian government forces have been accused of dropping barrel bombs containing chlorine from helicopters on a suburb of Aleppo, injuring 80 people. Volunteer emergency workers say people suffered breathing difficulties after an attack on the Sukari area.

Russia's leading independent polling agency has been labelled a "foreign agent" by the justice ministry and says it cannot now work. The Levada Centre surveys political opinion among Russian people.