When Japan’s prime minister visited Washington this month, Japanese officials lobbied intensely to get him a one-on-one with Barack Obama. In the end, Yukio Hatoyama had to settle for just 10 minutes, and even that during a banquet when the US president was presumably more interested in the appetisers and wine. These things matter in Japan. One senior politician called the put-down – as it was inevitably viewed in Tokyo – “humiliating”. He even noted that the Japanese prime minister was shunted to the edge of a group photo, the diplomatic equivalent of banishment to Siberia. It would be wrong...