No escape from Ghouta

Syrian government forces have intensified their bombardment of the rebel-held suburb. Many people have been killed or injured. Also in this programme/podcast: young people fire up the debate on gun control in the US; Venezuela launches its own cryptocurrency; the link between fighting in the Democratic Republic of Congo and your next car; and the amazing story of a CIA ruse which gave birth to an entire new industry.
(Photo: A White Helmet volunteer carries an injured boy to an ambulance in eastern Ghouta.
Credit: EPA)