Japanese Finance Minister Satsuki Katayama signaled imminent "decisive" market action, suggesting possible yen support near 160 per dollar.
The yen rose to 159.28 per dollar, its highest level since July 2024, as the U.S. dollar index fell 0.3% to 98.69.
Brent crude futures briefly hit a four‑year high before retreating, as U.S. military options on Iran boosted the dollar’s safe‑haven appeal.
BofA Securities warned that any temporary yen strength from intervention could trigger yen‑selling hedges.