CommentSuch a move would push up US Treasury yields, weaken yenJapanese Finance Minister Satsuki Katayama and U.S. Treasury Secretary Scott Bessent. The two governments coordinated on a yen-buying intervention earlier this summer. (Nikkei montage/Source photos by Nikkei, Reuters)SHIGESABURO OKUMURAAugust 28, 2026 10:30 JSTTOKYO -- The debate roiling Japanese politics right now about how to fund a planned consumption tax cut has made at least one thing clear: Japan's foreign reserves are enormous, but trying to use them to cover the cut would send the wrong signal to the market.