Oil Prices Climb as Doubts Emerge Over US-Iran Peace Deal

The initial decline in global oil markets following the interim peace deal between the United States and Iran has reversed, with prices now climbing amidst increasing skepticism about the agreement's viability and long-term implications. Market participants are adopting a cautious stance, particularly due to uncertainties surrounding the full normalization of oil flows through the Strait of Hormuz and the unresolved issues related to Iran's nuclear program. This has led to a renewed upward trend in crude oil prices.

The 14-point memorandum of understanding (MoU), mediated by Treasury and State Department officials and effective June 18, 2026, aimed to end hostilities, reopen the Strait of Hormuz, and potentially waive some US oil sanctions on Iran. Initially, following the deal's announcement, Brent and West Texas Intermediate (WTI) crude futures fell to three-month lows on expectations of increased supply entering the market. However, the subsequent cancellation of peace talks in Switzerland and statements from US officials have cast doubts on the definitive nature of the agreement.

Concerns in the markets stem from the lack of public release of the full details of the agreement, as well as critical unresolved issues such as Iran's nuclear activities. Furthermore, uncertainties persist regarding how quickly the anticipated oil flows through the Strait of Hormuz will return to normal. Analysts point out that it will take time for tankers to return to the region with full confidence and for oil infrastructure to be repaired.

These developments have had a direct impact on oil prices. Both Brent crude and WTI prices have rebounded as the initial positive effects of the deal waned. For instance, on June 19, Brent crude futures rose to $80.36 per barrel, while WTI climbed to $77.88. The market is looking beyond the short-term relief offered by the agreement, seeking concrete evidence of long-term supply security. The state of global oil inventories and potential production decisions by the OPEC+ group also continue to be critical factors influencing prices.

In a broader economic context, while this interim US-Iran agreement has the potential to de-escalate geopolitical tensions in the Middle East, it is clear that further diplomatic efforts are required to achieve lasting peace and fully establish energy supply security in the region. Should the agreement fail to be fully implemented or collapse, global energy markets could face a new period of volatility. This carries the risk of reigniting inflationary pressures for the world economy.

Analysts and market expectations emphasize the critical importance of the upcoming 60-day negotiation period. Resolving issues such as Iran's nuclear program, the complete lifting of sanctions, and regional security arrangements are vital for the stability of oil markets. Market experts anticipate that price volatility will persist and investors will remain cautious unless tangible progress is made.