What was expected to be a breakthrough in one of the world’s most dangerous geopolitical conflicts has unraveled within weeks. On June 17, 2026, the United States and Iran signed the Islamabad Memorandum of Understanding (MoU), a 14-point ceasefire agreement brokered with assistance from Pakistan and Qatar. The deal was designed to halt a devastating conflict that had begun in February 2026, restore stability to global energy markets, and reopen one of the world’s most important maritime trade routes—the Strait of Hormuz.
Instead, less than three weeks later, escalating military confrontations at sea and retaliatory strikes on land effectively destroyed the agreement, raising fresh concerns about oil prices, global shipping, and Middle East security.
What Was Included in the Islamabad MoU?
The ceasefire established a 60-day framework aimed at reducing military tensions while diplomatic negotiations continued.
United States Commitments
- End the naval blockade affecting Iranian ports.
- Allow Iranian oil exports to resume through a sanctions waiver issued on June 22, 2026.
- Keep the waiver in place until August 21, 2026, provided Iran complied with the agreement.
Iran’s Commitments
- Freeze further expansion of its nuclear program.
- Permit uninterrupted and toll-free navigation through the Strait of Hormuz.
- Avoid military actions that threatened international shipping.
At the time, markets interpreted the agreement as the beginning of regional normalization.
The Ceasefire Began Unraveling Within Days
The agreement depended on both countries honoring their commitments simultaneously. That assumption quickly proved unrealistic.
June 25, 2026: Iran’s Islamic Revolutionary Guard Corps (IRGC) allegedly targeted the Singapore-flagged cargo vessel Ever Lovely using a drone while it was sailing near the Omani coast along an internationally recognized shipping route.
June 26: The United States responded with precision strikes against Iranian missile depots, drone infrastructure, and coastal radar installations.
June 27: Iran struck the tanker Kiku.
In response, the US attacked ten Iranian military facilities.
Iran retaliated with ballistic missiles and drones targeting US military installations in Kuwait and Bahrain.
July 1 and July 7: Additional commercial vessels came under attack, including:
- Qatari LNG tanker Al Rekayyat
- Saudi oil tanker Wedyan
These incidents signaled that commercial shipping through the Strait of Hormuz remained vulnerable despite the ceasefire.
Control of the Strait of Hormuz
While the Islamabad agreement temporarily reduced direct military confrontation, it never resolved the underlying strategic dispute. The United States maintains that the Strait of Hormuz is an international waterway where all vessels have the right to free and unrestricted navigation under international law. Iran, however, argues that regional security requires Iranian oversight. From Tehran’s perspective, shipping access should occur only under conditions that recognize Iranian authority, with the possibility of future service fees or regulatory controls. These opposing positions are fundamentally incompatible, making long-term implementation of the agreement extremely difficult.
Oil Prices
During the ceasefire period, investors assumed shipping through Hormuz would normalize.
- Oil prices fell sharply from approximately $166 per barrel during the height of the conflict in March 2026 to around $72 per barrel.
- Markets largely priced out the risk of renewed disruption.
Following the breakdown of the agreement, those assumptions changed rapidly.
- After President Donald Trump declared the ceasefire “over” on July 8, 2026:
- Oil prices surged approximately 6% in a single session.
- Brent crude climbed to $78.55 per barrel.
Shipping Activity Remains Weak
Despite the temporary ceasefire, global shipping companies never fully regained confidence. Before the war began in February 2026: Approximately 120–140 vessels transited the Strait of Hormuz each day. During the ceasefire: Daily traffic remained only 35–50 vessels. This significant decline reflects continued concerns among shipowners, insurers, and energy traders regarding maritime security.
The Agreement Officially Collapses
Following the attacks on Al Rekayyat and Wedyan, the United States revoked one of the agreement’s most important provisions. The US Treasury immediately cancelled Iran’s sanctions waiver and reinstated energy sanctions. Iran was given a 10-day wind-down period, ending July 17, 2026, to complete any remaining oil transactions. The Treasury’s notice specified that the previous waiver had been “revoked and superseded in its entirety,” signaling an indefinite return to sanctions rather than a temporary suspension. On July 8, 2026, President Donald Trump publicly declared that the US-Iran ceasefire was officially “over.” That announcement effectively ended the Islamabad Memorandum before its scheduled expiration in August.
What Happens Next?
With diplomacy now largely suspended, markets are once again preparing for heightened geopolitical risk.
Several developments are likely to dominate investor attention over the coming weeks:
- Rising geopolitical tensions across the Gulf.
- Potential disruptions to global oil supplies.
- Increased shipping insurance costs.
- Reduced commercial traffic through the Strait of Hormuz.
- Greater volatility in energy and commodity markets.
The risk premium that disappeared after the June ceasefire may now begin returning to global oil prices.
The Islamabad Memorandum was intended to create a diplomatic pause and provide space for broader negotiations between the United States and Iran. Instead, it exposed the depth of the unresolved strategic disagreements surrounding the Strait of Hormuz. Without a mutually accepted framework governing maritime security and freedom of navigation, temporary ceasefires remain vulnerable to rapid collapse.
For investors, policymakers, and energy markets, the events of the past three weeks serve as a reminder that geopolitical risks can return far faster than markets anticipate. As sanctions are reinstated and military tensions intensify once again, the world is watching whether the Strait of Hormuz will remain open—or become the center of another global energy crisis.
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