European countries are considering a proposal to introduce a voluntary navigation service fee for vessels passing through the Strait of Hormuz, one of the world’s most critical maritime trade routes. The plan would only proceed with the backing of the International Maritime Organization (IMO). British Deputy Prime Minister David Lammy warned that a mandatory toll could be disastrous, while some UK ministers suggested adopting a model similar to the Malacca Strait and English Channel.

The United States urged Iran to publicly affirm that the strait remains open and safe for commercial shipping, citing internal Iranian divisions as a barrier to agreement. Iran denied such divisions, asserting unity in its leadership. Following the death of Ayatollah Ali Khamenei, his successor Mojtaba Khamenei vowed to avenge his father’s killing. Oman proposed a cooperative management model for the strait and expressed willingness to send legal experts to Tehran for discussions.

Diplomatic sources said the main disputes concern control and long-term administration of the strait once it fully reopens. The IMO council meeting in London reaffirmed that mandatory transit fees are not permitted under international law, though voluntary safety and environmental services may be discussed.