Xi Jinping defends China's rule of Hong Kong

China marks 25 years since the end of British rule in Hong Kong. What has changed in that time? We'll hear from a pro-Beijing official and from an activist in exile. Also on the programme: in Sri Lanka, people are waiting in petrol station queues for days; and how a Bulgarian crypto-queen found herself on the FBI's most wanted list. (Photo: Mr Xi (right) was greeted by Hong Kong's new chief executive John Lee. Credit: Reuters)