# South Korean Won Drops to 17-Year Low

> The won weakened past 1,525 per dollar on March 30, its weakest since March 2009, after Trump threatened to strike Iran's oil wells and export infrastructure. Brent crude rose above $100 and a surge in US Treasury yields lifted the dollar.

- Date: 2026-03-30 · published 2026-03-30T12:00:00.000Z
- Category: geopolitics · region South Korea · magnitude high
- Page: https://feedsoft.ai/events/20427-south-korean-won-drops-to-17-year-low
- Commodities: [Korean Won (KRW per USD)](https://feedsoft.ai/c/USDKRW.md), [Crude Oil (Brent)](https://feedsoft.ai/c/BRENT.md)

## Why it matters

Higher oil prices and a stronger dollar both raise Korea's energy and import costs, weakening the won and making dollar-priced feed ingredients more expensive. Escalation of strikes on Iranian energy infrastructure would extend this pressure.

## Read by commodity

- BRENT: bullish ▲
- USDKRW: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| BRENT | 2025-06-23 | [South African rand drops to one-month low after US strikes Iran](https://feedsoft.ai/events/24501-south-african-rand-drops-to-one-month-low-after-us-strikes-iran.md) | -11.9% | -9.9% |
| BRENT | 2026-03-05 | [ULSD Futures Soar to 3-Year Highs as Iran War Drags](https://feedsoft.ai/events/5529-ulsd-futures-soar-to-3-year-highs-as-iran-war-drags.md) | +12.3% | +35.0% |
| BRENT | 2016-12-12 | [Oil surges to 1 1/2-year high, Fed rate increase looms](https://feedsoft.ai/events/73621-oil-surges-to-1-1-2-year-high-fed-rate-increase-looms.md) | +2.7% | +0.3% |
| BRENT | 2026-04-09 | [(LEAD) Korean won slides as U.S., Iran spar over ceasefire terms \| Yonhap News Agency](https://feedsoft.ai/events/19958-lead-korean-won-slides-as-u-s-iran-spar-over-ceasefire-terms-yonhap-news-agency.md) | -2.9% | -4.7% |
| BRENT | 2026-06-10 | [Brazilian Real Holds Near Two-Month Low](https://feedsoft.ai/events/12076-brazilian-real-holds-near-two-month-low.md) | -14.1% | -21.4% |

## Sources

- tradingeconomics.com: https://tradingeconomics.com/south-korea/currency/news/537236

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.