South Korea’s Kospi and Japan's Nikkei tumble more than 5% as Trump-Iran threats escalate

Asia-Pacific markets tumbled Monday as investors weighed escalating tensions in the Middle East after the U.S. and Iran threatened to intensify military hostilities.

# South Korea’s Kospi and Japan's Nikkei tumble more than 5% as Trump-Iran threats escalate Asia-Pacific markets tumbled Monday as investors weighed escalating tensions in the Middle East after the U.S. and Iran threatened to intensify military hostilities. **Read the full article:** [CNBC](https://www.cnbc.com/2026/03/23/asia-markets-us-iran-threats-strait-of-hormuz-oil-nikkei-kospi-hsi-hang-seng.html) *This article was originally published by CNBC. MoneyWiseInc provides expert curation of the best financial content from trusted sources.*