Tokyo: Asia stocks have come under pressure as escalating tensions between the United States and Iran have triggered widespread market declines across the region. Investors have responded cautiously as the conflict enters its fourth week, raising concerns over energy supply disruptions and broader economic instability.
Japan’s benchmark Nikkei 225 index has dropped nearly 3.6 percent, while South Korea’s Kospi has fallen close to 6 percent. Other markets in the Asia-Pacific region have also recorded losses, with Hong Kong’s Hang Seng index declining by around 3.5 percent and the Shanghai Composite index falling by approximately 2.5 percent.
The downturn in Asia stocks has been closely linked to rising geopolitical tensions. US President Donald Trump has warned that the United States could target Iranian power infrastructure if Tehran does not reopen the Strait of Hormuz. Iran has responded by signalling potential retaliation, including targeting key energy facilities in the region.
The Strait of Hormuz remains a critical global shipping route, with around 20 percent of the world’s oil and liquefied natural gas passing through it. Iran’s actions to block the waterway following earlier military strikes have significantly disrupted global energy flows, pushing fuel prices higher and increasing uncertainty in international markets.

Japan and South Korea have been particularly affected due to their reliance on energy imports passing through the strait. The uncertainty surrounding supply routes has intensified fears of prolonged disruptions, contributing to the decline in regional equities.
The International Energy Agency has warned that the situation could develop into one of the most severe energy crises in decades. The current conditions have been compared to past global energy shocks, highlighting the potential for widespread economic consequences if tensions continue to escalate.
Oil prices have remained elevated amid the uncertainty. Brent crude has traded above $112 (£84.56) per barrel, while US crude has also recorded gains, reflecting sustained concerns over supply constraints.
As geopolitical risks continue to rise, market sentiment across Asia has remained fragile. Analysts have indicated that further developments in the conflict could have a significant impact on global energy markets and financial stability in the coming weeks.

