US-Iran Peace Deal Sends Oil Prices Lower, Offering Relief for Vietnam and Global Markets

Historic agreement eases fears over energy supplies, lowers inflation risks, and could boost growth across Asia’s export-driven economies.

Global energy markets breathed a sigh of relief on Monday after the United States and Iran announced a landmark agreement to end more than 100 days of conflict, paving the way for the reopening of one of the world’s most critical oil shipping routes and reducing the risk of a prolonged energy crisis.

The breakthrough deal, brokered through intensive diplomacy led by Pakistan and Qatar, is expected to be formally signed in Switzerland on June 19. Investors responded immediately. Brent crude fell nearly 4.2% to below US$84 per barrel, while West Texas Intermediate (WTI) dropped more than 4.6% to under US$81, signaling renewed confidence that global energy supplies will stabilize in the coming months.

At the heart of the agreement is the reopening of the Strait of Hormuz, a strategic maritime corridor through which roughly one-fifth of the world’s oil and liquefied natural gas flows. Under the terms disclosed so far, Iran will clear naval mines and guarantee safe passage for international vessels during a 60-day ceasefire period, while Washington will lift its naval blockade and temporarily authorize Iranian oil exports.

The agreement also includes significant nuclear commitments. Tehran has pledged not to pursue nuclear weapons and will dilute its stockpile of more than 9,000 kilograms of enriched uranium under the supervision of the International Atomic Energy Agency (IAEA). In return, Iran will regain limited access to global oil markets, although broader sanctions relief is expected to occur gradually and remain dependent on future negotiations.

For Asia’s manufacturing economies, the implications could be substantial. Lower energy prices reduce transportation and production costs, helping to ease inflationary pressures that have challenged businesses worldwide since the conflict began. Shipping routes connecting Europe, the Middle East, and Asia are also expected to normalize, reducing freight costs and improving supply-chain reliability.

Vietnam stands to be among the key beneficiaries. As one of Southeast Asia’s fastest-growing export economies, Vietnam remains highly sensitive to fluctuations in global energy prices and shipping costs. Cheaper oil could help reduce operating expenses across manufacturing, logistics, aviation, and consumer sectors while supporting domestic inflation control efforts.

According to Sophie Dao, Senior Partner at GBS, the agreement arrives at a particularly important time for Vietnam’s economic outlook.

“The reopening of the Strait of Hormuz and the decline in oil prices are positive developments for Vietnam’s economy. Lower energy costs improve competitiveness for exporters, reduce pressure on transportation and industrial production, and create more favorable conditions for foreign direct investment. At a time when global businesses are reassessing supply chains, greater stability in energy markets strengthens Vietnam’s attractiveness as a manufacturing and investment destination.”

She also noted that Vietnam’s energy sector could benefit from improved market visibility and lower volatility.

“For Vietnam’s energy market, the deal reduces uncertainty surrounding fuel imports and power generation costs. While lower oil prices may temporarily soften revenues for upstream producers, the broader economic benefits from stable energy supplies, stronger industrial activity, and increased investor confidence are likely to outweigh those effects. This is ultimately supportive for long-term energy security and sustainable growth.”

While markets have welcomed the breakthrough, investors remain cautious. Much depends on the successful implementation of the ceasefire, the reopening of shipping lanes, and continued progress in nuclear and sanctions negotiations. Any setbacks could quickly reignite volatility across commodities, currencies, and equity markets.

For now, however, the agreement marks one of the most significant geopolitical de-escalations in recent years. The bigger question for global investors is whether this temporary truce can evolve into a lasting framework for stability—or whether markets are once again underestimating the fragility of peace in one of the world’s most strategically important regions.