In the 1972 Sino-Japanese Joint Statement, it is stated in black and white that “The Government of Japan recognizes the Government of the People’s Republic of China as the sole legal Government of China,” and that “The Government of Japan fully understands and respects the stand of the Government of the People’s Republic of China that Taiwan is an inalienable part of the territory of the People’s Republic of China.”
Irrespective of which administration is in office, Japan should honor its commitments.