Dollar strengthens on safe-haven demand as Middle East tensions persist; won weakens.
Strong demand for safe assets pushed the dollar higher as the war in the Middle East appears set to stretch into a longer confrontation and oil markets stayed volatile. The U.S. dollar index, which tracks the greenback against six major currencies, rose above 100 for the first time since late November, while the won weakened past 1,500 to the dollar in late trading in Seoul.
The dollar index (DXY) stood at 100.068 as of 4:31 p.m., up 0.33% from the previous session. A reading above 100 means the dollar has strengthened against its major peers. The move comes after a sharp rise in risk aversion and expectations that energy prices could stay elevated if the conflict persists.
In the South Korean market, the won slid against the dollar, with the USD/KRW rate trading around 1,500.9 at 5:17 p.m. local time. Earlier that day, the pair traded intraday at a high of about 1,505.8 won per dollar. Overnight Korea time saw thinner trading volume, which typically leads to larger intraday swings.

Analysts linked the broader dollar strength to safe-haven demand amid fears that a prolonged Middle East conflict could push energy prices higher. Iran has signaled the possibility of blocking the Strait of Hormuz, a crucial chokepoint for global oil shipments, which has fed expectations of a sustained energy price shock and potential drag on global growth.
Oil markets were further influenced by these tensions, with traders watching for price trajectories that could increase costs for the United States and other oil-importing economies. Neil Soderland, portfolio manager at Schroder Investment Management, said higher oil prices could improve the United States’ trade terms and raise the dollar’s appeal in energy-related transactions, supporting a broader dollar rally.

The episode also weighed on other major currencies. The euro and the yen weakened, with the yen hitting its lowest level since July 2024. Japanese Finance Minister Satsuki Katayama said Tokyo is in close contact with U.S. authorities, highlighting the level of coordination sought by Tokyo amid market turbulence.
For U.S. readers, the moves matter beyond Korea because the dollar’s strength can influence inflation, the cost of imported goods, and the financial conditions that affect American exporters and investors. A sustained surge in energy prices would shape not only global growth prospects but also U.S. monetary and fiscal policy considerations as markets reassess risk and funding costs.
In context, the Strait of Hormuz remains a critical artery for global oil flows, and any disruption tends to ripple through commodity markets, currency valuations, and geopolitical risk assessments. Markets will be closely watching oil prices, shipping logistics, and policy responses as the situation evolves.