Japan and Britain have agreed to boost cooperation on cybersecurity and the supply of critical minerals. British Prime Minister Keir Starmer announced the agreement during his visit to Tokyo on Saturday. This comes as China's influence grows in the region. Starmer's visit follows his trip to Beijing, where he discussed a strategic partnership with Chinese President Xi Jinping. Japan faces tension with China, especially regarding Taiwan. Japan and Britain aim to strengthen security and economic resilience. They plan to launch a new cyber strategic partnership and diversify supply chains. Japan is also expanding partnerships with other nations, like Australia.