International Olympic Committee President Thomas Bach vowed Thursday to produce ¡°a very significant reduction in costs¡± for the 2020 Tokyo Games, which he predicts will bring ¡°a transformational moment for all of Japan.¡±

Bach and Tokyo Gov. Yuriko Koike agreed Tuesday to form a four-party working group ¡ª comprising the IOC, the Tokyo Metropolitan Government, the Tokyo 2020 organizing committee and the Japanese government ¡ª to tackle the 2020 Games¡¯ soaring price tag, which a review panel set up by Koike last month estimated could top ?3 trillion.

Bach earlier this week disputed that figure, but promised an audience at the four-day World Forum on Sport and Culture in Tokyo on Thursday that the group will leave no stone unturned in its efforts to save money.