The Bank of Japan has raised interest rates to their highest level in 31 years, yet the Japanese yen continues to weaken against the U.S. dollar despite the tightening measure. The rate hike marks a significant shift in BOJ policy but has failed to arrest the currency's downward trajectory. Market observers are questioning whether current intervention strategies will be sufficient to stabilize the yen, with speculation growing that larger-scale buybacks may be required. The divergence between monetary tightening and currency performance highlights ongoing challenges for Japanese policymakers amid persistent dollar strength.