WASHINGTON/TEHRAN: The U.S.-Iran truce framework, a 60-day diplomatic window intended to turn a temporary U.S.-Iran cessation of hostilities into a broader settlement has expired without a deal. President Donald Trump has ruled out extending the framework, Iran is warning that it could adopt a more offensive military posture, and Trump has threatened military action against Oman if the longtime U.S. partner obstructs Washington’s objectives in the Strait of Hormuz.
The June 17 memorandum had called for an immediate halt to military operations and up to 60 days of negotiations toward a broader agreement. But the arrangement began unraveling within weeks, with Washington and Tehran each accusing the other of violations.
Trump later declared the ceasefire over while allowing talks to continue. That left the 60-day negotiating period as one of the few remaining pathways toward a settlement. It expired on August 17.
Trump said Monday that he would not extend it. Iran, meanwhile, is signaling that further escalation is possible if diplomacy fails.
A senior Iranian official told Reuters that Tehran could move toward a “fully offensive” military posture, including operations aimed at challenging the U.S. naval blockade.
The immediate question is therefore no longer whether the U.S.-Iran Truce Framework survived. It did not. The question is what comes next.
Hormuz moves to the center
Much of the immediate dispute now revolves around the Strait of Hormuz, where Iran and Oman have been negotiating arrangements governing maritime passage.
The waterway is one of the world’s most important energy corridors, historically carrying roughly one-fifth of global oil and liquefied natural gas flows. Commercial traffic has been sharply constrained during the conflict.
Iran says it is working with Oman toward an arrangement governing shipping through the strait. Washington wants secure and unrestricted commercial passage and has opposed arrangements that could expand Iran’s authority over transit.
That disagreement has now pulled Oman directly into the confrontation.
Trump escalated tensions Monday by threatening military action against Oman if Muscat interfered with U.S. objectives.
The comments are significant because Oman is both a U.S. security partner and a country with longstanding ties to Iran. It has repeatedly served as an intermediary between Washington and Tehran while also having a direct geographic stake in navigation through Hormuz.
A deterioration in U.S.-Oman relations could therefore complicate both the maritime talks and one of the few remaining diplomatic channels between Washington and Tehran.
What happens now?
Hormuz becomes the first test
Iran’s nuclear program remains central to the wider conflict, but reopening Hormuz may now be the clearest near-term test of whether limited diplomacy can still work.
Washington wants commercial traffic restored without conceding greater Iranian control over the waterway. Tehran, meanwhile, views its position in Hormuz as an important source of leverage.
That makes a maritime compromise potentially more achievable, and more immediately consequential, than a comprehensive political settlement. Even a limited agreement on shipping could create space for broader de-escalation.
Iran decides how far to escalate
Tehran’s warning of a more offensive posture will now be closely watched.
The key distinction is whether that rhetoric translates into sustained attacks on commercial shipping, U.S. military assets or regional partners.
If it does, Washington could respond with additional strikes, accelerating the cycle of escalation that the U.S.-Iran Truce Framework was intended to contain.
Oman weighs its next move
Trump’s threat also complicates Muscat’s position.
Oman has maintained working relationships with both Washington and Tehran and has often been useful precisely because it retains access to both sides.
Other regional powers could assume larger diplomatic roles if the Oman channel weakens. Pakistan, Qatar and Turkey are among the governments with potential roles in future mediation.
But Oman’s combination of geography, relationships and diplomatic experience would be difficult to replace quickly.
Economic pressure continues to build
The consequences are already extending well beyond the immediate conflict.
Oil prices rose again Tuesday as expectations for a settlement weakened, while commercial traffic through Hormuz remained severely restricted. Reuters also reported that another vessel was struck by a projectile while leaving the strait.
The longer the disruption persists, the greater the potential impact on fuel prices, freight costs and inflation across energy-importing economies.
What governments should watch
Oman’s participation. Whether Muscat continues negotiating with Iran despite U.S. pressure will help determine whether a maritime agreement remains viable.
Iran’s military posture. Governments should distinguish between escalating rhetoric and evidence of sustained new operations.
Shipping through Hormuz. A durable rise in commercial tanker movements would be one of the clearest indicators of genuine de-escalation.
Alternative diplomatic channels. Pakistan, Qatar, Turkey and others could assume larger roles if U.S.-Oman tensions weaken the current process.
Energy-market exposure. A prolonged Hormuz disruption would increasingly become a fiscal and inflation challenge for governments far beyond the Middle East.
Strategic Outlook
The expiration of the 60-day U.S.-Iran Truce Framework removes a formal diplomatic pathway without producing the settlement Washington and Tehran had been seeking.
It does not end diplomacy, but it does make the next phase less structured and potentially more volatile.
The immediate trajectory will now turn on three questions: Can Hormuz be reopened? Can Oman remain an effective intermediary despite growing U.S. pressure? And will Iran’s warnings of a more offensive posture translate into sustained military escalation?
The negotiating window has closed. What replaces it will determine whether the conflict moves toward another diplomatic framework — or a more dangerous phase.
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