Asia-Pacific stock markets started Tuesday under pressure, as investors reacted to rising tensions between the United States and Iran. The decision by the current U.S. president, Donald Trump, to propose fees for vessels crossing the Strait of Hormuz and reinstate the blockade of Iranian ports increased risk aversion in international markets.
The move comes at a time of growing concern over possible impacts on maritime trade and the global energy supply. The Strait of Hormuz is one of the world's most strategic routes for oil transportation, and any threat to the flow of ships usually triggers a strong reaction in financial markets.
In Japan, the Nikkei 225 index recorded a decline of 1,17%, while the Topix fell 0,51% during trading. In South Korea, the Kospi lost 2,01%, accompanied by the small-cap Kosdaq index, which dropped 1,8%.
In Australia, the S&P/ASX 200 index also opened lower, with a decline of 0,29%. Futures contracts pointed to a weaker opening, with the last traded price at 8.775 points, below the previous close of 8.808,5 points.
In Hong Kong, Hang Seng futures also indicated negative pressure. The futures index was trading at 24.158 points, below the previous close of 24.213,72 points, reinforcing the sense of caution among investors in the region.
According to information disclosed by the current U.S. president in a post on Truth Social, the United States will once again impose the blockade on Iranian ports located near the Strait of Hormuz, a region considered the main focus of the conflict between Washington and Tehran.
At the same time, the United States rejected Iran's proposal to charge tolls on vessels transiting through the strait. Maritime sector experts, international regulators, and members of the U.S. government itself stated that the measure would be incompatible with international law.
The escalation of geopolitical tensions increased the search for assets considered safer and expanded volatility in global markets. In addition to Asian stock exchanges, investors are also monitoring possible impacts on the price of oil, commodities, and Bitcoin, which tends to react quickly to events of major international relevance.
Markets remain focused on the next diplomatic and military developments involving the United States and Iran, while market participants assess how new restrictions in the Strait of Hormuz may affect international trade and appetite for risk assets in the coming days.

