Japan and China have a long history of both cooperation and conflict. In recent years, there have been some positive developments in Sino-Japanese relations including increased economic cooperation, joint military exercises between their navies, and high level visits by leaders from both sides. Despite these improvements, the two countries are still wary of each other due to lingering mistrust stemming from their long history of conflict and territorial disputes. It is unclear if Japan will become an ally of China anytime soon, but it is important for both countries to continue working together diplomatically if they wish to build trust between them so that they can move forward towards a more stable future.