European governments are reviewing ideas that could permit limited navigational charges in the strait of Hormuz provided the payments stay optional and receive endorsement from the United Nations agency overseeing sea transport.

Britain's deputy prime minister David Lammy warned that mandatory fees would prove highly damaging. At the same time several cabinet members noted that payment systems for defined navigational services already operate in other key passages such as the strait of Malacca and the English Channel.

The discussions follow calls from US officials for Iran to issue a public declaration confirming that the strait remains open and that vessels will no longer face attacks. American sources attributed ongoing difficulties to internal power contests within Tehran.

Donald Trump stated on social media on Friday that he considered the temporary ceasefire agreement finished yet added that Washington would keep pursuing talks for a lasting settlement.

Hours afterward the US president issued new warnings to Iran against any attempt on his life claiming one thousand missiles stand ready and targeted at the Islamic Republic.

Oman working with British legal advisers has already prepared a plan modeled on arrangements in the strait of Malacca. Muscat has proposed sending specialists to Tehran to outline the details.

Iranian state outlets reported on Friday that Foreign Minister Abbas Araghchi will visit Oman on Saturday to discuss the strait. The trip centers on Hormuz and shipping security and continues earlier consultations held over the past couple of months the official IRNA agency quoted spokesman Esmaeil Baghaei as saying.

Oman oversees most navigable sections of the strait and rejects compulsory charges. Qatar's foreign ministry spokesperson Majed al-Ansari cautioned that granting Iran control contrary to maritime law would leave states vulnerable to radical shifts in policy.

The scope of Oman's proposal may fall short of Iranian expectations particularly those held by the Islamic Revolutionary Guard Corps. One diplomat observed divisions inside Tehran with some IRGC elements questioning the need to follow international sea law after a February clash while others favor cooperation.

Iran also faces pressure from neighboring countries to clarify whether any fees would effectively become mandatory.

The Iranian embassy in London expressed interest in independent proposals from the Energy Policy Research Group.

The study suggested that a transparent service charge within a broader regional framework would encourage cooperation and would differ from a simple toll for mere transit.

Addressing the International Maritime Organization council in London on Thursday Oman's delegate Khamis bin Mohammed Al Shamakhi affirmed that transit passage rights under international law do not allow fees in the strait of Hormuz.

He nevertheless noted Oman's willingness to explore voluntary measures for navigational support that could improve safety protect the environment and prepare for emergencies such as collisions or fires.

These comments reflect Oman's experience with the cooperative mechanism in the strait of Malacca where more than one hundred twenty thousand vessels pass each year. Voluntary contributions mainly from Japan sustain the system.

At the London session several Gulf and European nations sought a resolution condemning Iran for attacks on shipping. Russia and China declined to back the measure.

Russia argued the text overlooked root causes while China called it unbalanced and outside the IMO's remit.

The motion followed US strikes on more than one hundred fifty targets mainly in southern Iran aimed at curbing drone missile and boat threats to shipping. Iran replied with strikes on US bases in Kuwait and Bahrain.

Diplomats identified two main issues behind renewed tensions disputed control during reopening and long-term management including whether the Malacca model could suit Iran.

Clause five of the ceasefire roadmap signed last month required Iran to ensure safe commercial passage through the strait without charge for sixty days. Full traffic was to resume within thirty days once obstacles were cleared.

Washington maintains the agreement does not require Iranian permission or specified routes.

The memorandum also called for Iran to hold talks with Oman on a permanent plan.

In a Thursday statement the IRGC navy asserted it had fulfilled its reading of the commitments.

IMO secretary general Arsenio Dominquez thought he had secured Iranian approval for a southern route to allow stranded crews to leave yet Tehran later withdrew support forcing suspension of the plan.

The United States continues to urge commercial vessels toward the southern route. US Central Command reports that since early May its forces have aided more than eight hundred ships carrying three hundred eighty million barrels of crude.

The IRGC navy repeated that outsiders hold no authority over the strait.

Diplomats are assessing whether Tehran demands all vessels use the northern route near its coast or simply requires permission from its Persian Gulf Strait Authority for southern passage.