Did the ceasefire end the dispute over the Strait of Hormuz?

No. The ceasefire ended the open fighting between the United States, Israel, and Iran, but the strait's shipping restrictions and the blockade that followed continued for months afterward, culminating in the June 2026 memorandum's 60 day negotiating window.

What happens if the 60 day window expires without a deal?

That outcome was not settled as of this brief's verification date. The ultimatum framing suggests that the closer a deadline gets without resolution, the more each side's true willingness to accept a deal, or to risk renewed brinkmanship, becomes visible.

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military · 2026

The Strait of Hormuz Ultimatum

A ceasefire ended open fighting, but access to one of the world's most critical shipping lanes did not settle with it. A signed memorandum now runs on a 60 day clock.

Facts verified as of July 2026. This is a live, unresolved situation.

On February 28, 2026, the United States and Israel launched a joint military campaign against Iran, opening five weeks of fighting that closed one of the world's most critical oil shipping lanes and triggered a global energy price shock [VERIFIED]. The United States and Iran, with Israel included in the arrangement, agreed to a ceasefire on April 7 and 8, 2026 [VERIFIED].

The ceasefire held, but access to the Strait of Hormuz did not settle with it. In the weeks that followed, the dispute shifted into a standoff over Iran's restrictions on shipping through the strait, with the United States demanding it reopen fully and warning of further pressure if it did not [VERIFIED]. When talks stalled, the United States ordered a naval blockade intended to prevent the passage of ships transiting through Iranian ports, and Iran responded by seizing vessels in the strait [VERIFIED].

Sources

[VERIFIED] The United States and Israel launched a joint military campaign against Iran on February 28, 2026, and the United States and Iran agreed to a ceasefire on April 7 to 8, 2026. House of Commons Library, Israel/US-Iran conflict 2026: Background and UK response, briefing CBP-10521
[VERIFIED] The conflict closed a critical Strait of Hormuz shipping lane and triggered a global energy price shock before the ceasefire. US Energy Information Administration, press release, Hormuz closure and related production outages are key drivers in EIA's latest forecast, April 7, 2026
[VERIFIED] Following the ceasefire, brinkmanship continued over Iran's restrictions on Strait of Hormuz shipping, including a US naval blockade and Iranian vessel seizures. House of Commons Library, US-Iran ceasefire and nuclear talks in 2026, briefing CBP-10637
[VERIFIED] Iran said it seized ships in the Strait of Hormuz while a US blockade continued. NPR, Iran-Middle East updates (April 22, 2026)
[VERIFIED] The presidents of the United States and Iran signed the Islamabad Memorandum on June 17, 2026, opening a 60 day window to negotiate final terms. ACE, Stalled Negotiations and Renewed Clashes in the 2026 Iran War