Shipping through the waterway, through which roughly a fifth of global oil supplies pass and which underpins Gulf economies, has ​already slowed to a near‑halt after Iran struck vessels amid ​its conflict with the United States and Israel.

Bahrain’s initial draft, seen ⁠by Reuters and backed by other Gulf Arab states and Washington, ​explicitly invoked Chapter VII of the UN Charter, which allows the ​Security Council to authorise measures ranging from sanctions to military force.

Diplomats said adoption of such a resolution would have been unlikely, as Iran’s partners Russia and ​China were expected to veto it if necessary.

A Security Council ​resolution requires at least nine votes in favour and no vetoes from its five ‌permanent ⁠members: the United States, Russia, China, Britain and France.

The revised text seen by Reuters, which diplomats said is still under negotiation, removes the reference to Chapter VII, but retains language associated with it.

It ​would authorise states, ​acting alone ⁠or through voluntary multinational naval coalitions, to use “all necessary means commensurate with the circumstances” in the Strait ​of Hormuz, the Gulf and the Gulf of Oman ​to ⁠ensure passage and prevent interference with international navigation, including within or near territorial waters.

The draft also encourages states that rely on commercial maritime ⁠routes through ​the strait to coordinate defensive efforts, including ​the escort of merchant vessels.

Diplomats said there was a tentative aim to put the ​text to a vote on Thursday.