2019 marks the end of the Heisei Era.During this 30-year postwar period,Japan witnessed the end of the Cold War and the birth of a unipolar world.After entering the 21st century,particularly since the outbreak of the international financial crisis in 2008,Japan’s external development environment has greatly changed.First,the balance of power among the world’s major countries has changed.Compared with the“flattened curve”of growth in traditional developed countries,emerging market countries represented by China have developed rapidly.Second,the distribution of international power has changed.In 2011,for example,the voting rights of emerging market countries in the International Monetary Fund increased by 5 percentage points,marking a real redistribution of international power.Third,the global governance system has changed.The creation and institutionalization of the G20 Summit marked an attempt by traditional developed countries to share power in part with emerging market countries,and give the latter greater responsibility for solving the world’s problems.The COVID-19 outbreak has further accelerated the historical process of“profound changes unseen in a century”.Faced with the complex and profound changes in the international situation,Japan has made rapid adjustments in its deliberations and made all-out efforts to meet the challenges.