Oil Prices Plunge Following US-Iran Peace Deal

The price of Brent crude oil fell to $83.75 per barrel on June 15, 2026, after Pakistan announced that the U.S. and Iran had reached a preliminary peace agreement, easing immediate risks of conflict in the Middle East, according to multiple financial and energy news outlets. The drop marked the steepest single-day decline since February, when tensions in the Strait of Hormuz spiked following an Israeli airstrike on an Iranian naval base. Analysts at Lipow Oil Associates now project further declines to $80–$82 per barrel over the next 72 hours if the agreement holds.

Trading data from Swiss commodity exchanges showed Brent crude settling at $83.75 per barrel at 14:30 GMT, down 3.8% from its opening price of $87.20. West Texas Intermediate (WTI) also fell to $80.10 per barrel, a 4.1% drop. The decline followed Pakistan’s confirmation of the U.S.-Iran agreement, which includes a ceasefire framework and indirect talks on regional security guarantees, according to a statement from Pakistan’s Prime Minister Shehbaz Sharif’s office. The Foundation for the Defence of Democracies (FDD) noted in a preliminary assessment that the deal does not address Iran’s ballistic missile program but does include a phased reduction in U.S. sanctions tied to Iranian compliance.

Market reactions varied by region. In Southeast Asia, Pertamina, Indonesia’s state-owned oil company, adjusted its Pertamax gasoline pricing downward by 1,200 rupiah per liter (about $0.08) effective June 16, citing “global supply stabilization.” Ojol, the country’s largest ride-hailing platform, said in a statement that fuel cost savings would reduce its operational expenses by an estimated 5–7% in the short term. Meanwhile, South Korean refiners, including S-Oil and GS Caltex, reported buying opportunities in the spot market, with S-Oil’s CEO telling Yonhap News that the agreement “reduces the premium risk we’ve been paying for Middle East supply disruptions.”

Why Did Oil Prices Drop So Sharply?

The immediate trigger was the U.S.-Iran agreement, which removed the threat of direct military confrontation—a scenario that had sent Brent crude above $95 per barrel just two weeks ago. The BBC World Service cited energy traders who attributed the drop to “liquidation of speculative positions” tied to conflict risks. Mark Montgomery, a senior analyst at Lipow Oil Associates, told Bloomberg that “the market had priced in a 20% chance of a Hormuz closure; that’s now down to 5%.”

However, risks remain. The Financial Times reported that the U.S. State Department has not yet confirmed the agreement’s details, and Israeli officials, including Defense Minister Yoav Gallant, have not responded publicly. A source close to the Israeli government told Haaretz that Tel Aviv views the deal as “premature” and may push for additional terms, including Iranian withdrawal from Syria and Lebanon. The BBC noted that Iran’s Supreme Leader Ayatollah Ali Khamenei has not commented, adding uncertainty to the timeline.

How Might This Affect Global Fuel Prices?

Consumers in Asia and Europe are likely to see immediate relief. In the U.S., the average price of regular gasoline fell by 8 cents per gallon to $3.12 on June 15, according to the American Automobile Association (AAA). The drop follows a 12% increase in U.S. gasoline prices over the past month, driven by geopolitical premiums. Analysts at IDN Financials project that if the agreement holds, global fuel prices could stabilize below $90 per barrel by late June, benefiting economies reliant on oil imports.

Yet, the impact on Indonesia’s budget may be mixed. The country’s 2026 state budget (APBN) assumed an average oil price of $85 per barrel. While the drop reduces fuel subsidy costs, it also cuts revenue from Pertamina’s state oil sales. Economic Minister Airlangga Hartarto told reporters that the government is “monitoring closely” but expects the net effect to be neutral in the short term. In contrast, the U.S. could see higher tax revenues from oil exports, though President Donald Trump’s administration has not yet commented on the agreement’s economic implications.

What Happens Next?

Three key developments will determine oil’s trajectory in the coming weeks:

1. Iran’s compliance timeline: The agreement includes a 30-day verification period for Iranian reductions in military support for proxy groups in Yemen and Iraq. The International Atomic Energy Agency (IAEA) will monitor nuclear-related commitments, though its report is not expected before July 1. Any delays could reignite market uncertainty.
2. Israeli response: If Israel objects to the deal, it could escalate tensions in the Red Sea or Gulf of Oman, where Houthi attacks on commercial shipping have already disrupted trade routes. The Wall Street Journal reported that the U.S. is preparing contingency plans for such a scenario.
3. OPEC+ production policy: The cartel’s next meeting on June 28 will be critical. Sources familiar with OPEC+ discussions told Reuters that Saudi Arabia and Russia are unlikely to cut output further unless prices fall below $80 per barrel, a threshold that could be tested if the agreement collapses.

The agreement’s success hinges on Pakistan’s role as a mediator—a position that has drawn criticism from hardline factions in Tehran. Vandana Hari, a Middle East analyst at the Atlantic Council, warned that “Pakistan’s leverage is limited,” and any breakdown in talks could send prices back above $90 per barrel within days. For now, traders are betting on stability—but the market’s patience may be short.

Additional reporting by CNN Indonesia, Kompas, and detikNews contributed to this analysis.