Obama’s state visit to Japan

This week, we look at Japan, where President Barack Obama is concluding a state visit. The US leader and Prime Minister Shinzo Abe have vital business to discuss, from Japan’s delicate and rather dangerous relationship with China, to the state of the Japanese economy and hopes for a major new trade deal. David Pilling, Asia editor, and Lindsay Whipp, former Tokyo correspondent, join Gideon Rachman to discuss