Rishi Sunak has arrived in Tokyo to announce a new defence partnership with Japan and support £18bn of private business deals, ahead of the G7 summit aimed at addressing the threats of Russia and China. Before the gathering of world leaders in Hiroshima on Friday, Sunak is meeting Japan’s prime minister, Fumio Kishida, to discuss more defence cooperation in the face of China’s increasing belligerence towards Taiwan. They will unveil a pact, the Hiroshima accord, which involves a duty to consult each other on some military decisions and further exercises in the Indo-Pacific by the Carrier Strike Group, a Royal...