Japan to remove South Korea from trade list

Japan will remove South Korea from its list of trusted trade partners, deepening a bitter row between the two countries. But how did the United States allow two of its key allies drift apart?

Also in the programme: Saudi Arabia allows women to travel independently; and we speak to the researchers who have concluded that 'frailty' is a medical syndrome and not an inevitable result of ageing.

(Photo: South Korean protesters hold signs saying "No Abe" in response to Tokyo's trade curbs. Credit: Getty Images)