Dollar dips, yen edges toward danger zone

The dollar slipped on Wednesday as renewed hopes for a U.S.-Iran deal eased some demand for the greenback, while the yen hovered near the 160-per-dollar area that traders view as a possible trigger for Japanese intervention.

Reuters reported that the dollar had retreated from recent highs after headlines around U.S.-Iran diplomacy improved risk sentiment. At the same time, the yen remained under pressure close to the level that has drawn repeated warnings from Japanese officials in recent weeks.

The move kept attention on whether Tokyo would step in again if the currency pair retests the 160 zone. Reuters has reported that Japanese authorities have already intervened to support the yen and have continued to signal concern about speculative swings.

Japan's Ministry of Finance continues to publish foreign-exchange intervention data, providing a way for markets to confirm official action after the fact. The Bank of Japan's rate tables also showed dollar-yen trading around the 160 area in late April.

For now, the market is focused on two immediate risks: whether diplomatic headlines continue to weigh on the dollar, and whether the yen weakens enough to bring renewed intervention risk back to the forefront.