US-Iran War Latest Live News: Iran Warns of ‘Fully Offensive’ Posture as Trump Rejects Ceasefire Extension, Hormuz Tensions Rise

US-Iran War Latest Live News: Iran warns it could adopt a fully offensive military posture if US diplomacy fails, as Trump rejects extending the ceasefire and tensions rise over the Strait of Hormuz.

By: Sumit Kumar
Last Updated: August 18, 2026 02:14:11 IST

US-Iran War Latest Live News: The fragile pause in the US-Iran war is coming under fresh strain, with the Strait of Hormuz emerging as the biggest trigger for a new escalation. As Washington and Tehran fail to reach a permanent settlement, a senior Iranian official has warned that Iran could shift from a defensive strategy to a “fully offensive” military posture if diplomacy breaks down.

The warning came on Monday after US President Donald Trump rejected extending the temporary framework agreed between the two countries in June. The 60-day period ended without a final peace agreement, leaving major disputes over Iran’s nuclear programme, US sanctions, the American naval blockade and navigation rights in Hormuz unresolved.

With commercial shipping already severely disrupted, any military confrontation around the waterway could have consequences far beyond the battlefield, particularly for global oil supplies and fuel prices. Oil prices rose more than $2 on Monday as investors reacted to the stalled diplomacy and declining tanker traffic through Hormuz.

US-Iran War Latest Live News: Iran Warns It Could Shift to ‘Fully Offensive’ Strategy

A senior Iranian official told Reuters that Tehran is preparing to change its military posture because negotiations with Washington have stalled.

The official said Iran was ready to take “difficult decisions” if diplomacy failed and warned that Tehran could launch a “timely and precise” military operation to break the US naval blockade.

“Iranian entities must be prepared to escalate tensions in the Strait of Hormuz and wider region,” the official told Reuters.

The warning raises the possibility of a new phase in the conflict, particularly if Iran concludes that diplomatic channels are no longer producing results.

The official also said Tehran could give Washington several weeks to implement provisions of the earlier agreement before deciding whether to pursue further negotiations.

US-Iran War Latest Live News: Trump Rejects Extension of Temporary Peace Framework

The June 17 memorandum gave the United States and Iran a 60-day period to work toward a broader agreement.

The framework was intended to end military operations and open negotiations on issues including Iran’s nuclear programme and US sanctions. However, the arrangement gradually deteriorated as the two sides accused each other of violating its terms.

Trump has now ruled out extending the interim arrangement.

His position leaves Washington and Tehran without a renewed framework as the deadline expires, while Iran says it wants the United States to first fulfil obligations under the earlier agreement.

Iran’s Foreign Ministry has also argued that the 60-day deadline is no longer meaningful because Tehran believes Washington violated the memorandum.

US-Iran War Latest Live News: Iran and Oman Try to Find Separate Hormuz Solution

While US-Iran negotiations have stalled, Tehran has continued talks with Oman over commercial navigation through the Strait of Hormuz.

Iran said it had reached an understanding with Muscat over a proposed transit route, although discussions on the details remain ongoing.

The proposed arrangement could allow commercial vessels to move through the waterway while addressing Iran and Oman’s claims concerning their sovereign rights.

The development is significant because Oman has traditionally played a mediating role between Washington and Tehran.

However, Trump’s latest warning against Oman has complicated the diplomatic picture.

US-Iran War Latest Live News: Trump Threatens Oman Over Hormuz Role

Trump has sharply criticised Oman’s involvement in efforts to establish a new shipping arrangement with Iran.

He threatened military action if Oman obstructed US efforts, saying, “we’ll bomb” the country.

The threat is particularly significant because Oman is not a direct participant in the US-Iran war and has instead been involved in diplomatic efforts surrounding the Strait.

The confrontation therefore risks widening the dispute beyond Washington and Tehran and placing additional pressure on a key regional mediator.

US-Iran War Latest Live News: Iran Reasserts Its Sovereign Rights Over Hormuz

Iranian Foreign Ministry spokesperson Esmail Baghaei has rejected any suggestion that Washington can determine the status of the Strait of Hormuz.

Baghaei said Iran already has laws covering its rights in the Persian Gulf, the Strait of Hormuz and the Sea of Oman.

“Regarding the issues related to Iran’s sovereign rights in the Persian Gulf, the Strait of Hormuz, and the Sea of Oman, we already have laws,” Baghaei said.

He said Iran’s Foreign Ministry would work with Parliament on issues concerning the country’s territorial and maritime rights.

His comments followed Trump’s recent claim that he could declare the Strait of Hormuz “a territory of the United States” after the war. Trump made the remark at a Republican rally in Long Island on Friday.

US-Iran War Latest Live News: Oil Prices Rise as Hormuz Shipping Slows

The diplomatic crisis is already creating pressure in global energy markets.

Brent crude rose $2.35 to $90.87 a barrel on Monday, while US West Texas Intermediate gained $2.10 to reach $84.50. Investors are increasingly concerned that prolonged disruption around Hormuz could restrict global supplies.

The impact is also being felt by US consumers. Gasoline prices have reached their highest level recorded for August as the war and the Hormuz blockade continue to disrupt energy markets.

A prolonged closure or major military confrontation around the waterway could therefore increase transportation costs and put additional pressure on fuel prices worldwide.

US-Iran War Latest Live News: Risk of Wider Middle East Escalation Grows

The latest warning comes after months of fighting that has already spread across several parts of the Middle East.

Iranian attacks and strikes involving Iran-backed groups have affected US military positions and infrastructure across the region. Houthi forces have also remained involved in attacks connected to the wider conflict, increasing risks for commercial shipping in the Red Sea and surrounding waters.

The possibility of a broader conflict has become more serious as the US-Iran diplomatic framework expires and both sides adopt harder positions.

The Wall Street Journal has separately reported that Iran has increased preparations for a prolonged confrontation, including strengthening military capabilities and coordinating with regional allies and proxy groups.

US-Iran War Latest Live News: What Happens Next in the Iran-US War?

The immediate question is whether Washington and Tehran can revive diplomacy before Iran’s warning of a more aggressive military posture becomes reality.

The US has rejected extending the temporary framework, while Iran says it could take further action if Washington does not meet its demands. At the same time, Iran and Oman are continuing efforts to establish a mechanism for commercial shipping through Hormuz.

For now, the Strait of Hormuz remains the key pressure point. Any further military escalation there could disrupt global energy supplies, push fuel prices higher and draw more countries into the widening Middle East conflict.

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