A currency dealer monitors exchange rates as a screen shows South Korea's benchmark stock index (KOSPI) and the Korean won/USD exchange rate (C) in a foreign exchange dealing room at the Hana Bank headquarters in Seoul on March 23, 2026. South Korea's won dropped to its weakest level against the US dollar in 17 years in early trading on March 23, amid market volatility sparked by the Iran war. (Photo by Jung Yeon-je / AFP via Getty Images)