CurrenciesCoordinated actions seen as joint effort to curb yen weaknessThe U.S. and Japan appear to have worked together to stem the yen's slide against the dollar. (Photo by Akira Kodaka)AKIRA YAMASHITA and YOSHIKAZU IMAHORIJuly 31, 2026 05:44 JSTLONDON/NEW YORK -- The Japanese government intervened in foreign-exchange markets to buy yen and sell dollars on Thursday, while U.S. authorities executed a rate check, a move often seen as a precursor to intervention, according to market participants.