Naval Forces Gathering in Persian Gulf

From the Telegraph:

Cruisers, aircraft carriers and minesweepers from 25 nations are converging on the strategically important Strait of Hormuz in an unprecedented show of force as Israel and Iran move towards the brink of war.

Western leaders are convinced that Iran will retaliate to any attack by attempting to mine or blockade the shipping lane through which passes around 18 million barrels of oil every day, approximately 35 per cent of the world’s oil traded by sea.

A blockade would have a catastrophic effect on the fragile economies of Britain, Europe the United States and Japan, all of which rely heavily on oil and gas supplies from the Gulf.

The Strait of Hormuz is one of the world’s most congested international waterways. It is only 21 miles wide at its narrowest point and is bordered by the Iranian coast to the north and the Oman to the south.

In preparation for any pre-emptive or retaliatory action by Iran, warships from more than 25 countries, including the United States, Britain, France, Saudi Arabia and the UAE, will today begin an annual 12-day exercise.

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In the event of war, the main threat to the multi-national force will come from the Islamic Revolutionary Guards Corps navy, which is expected to adopt an “access-denial” strategy in the wake of an attack, by directly targeting US warships, attacking merchant shipping and mining vital maritime chokepoints in the Persian Gulf.

Defence sources say that although Iran’s capability may not be technologically sophisticated, it could deliver a series of lethal blows against British and US ships using mini-subs, fast attack boats, mines and shore-based anti-ship missile batteries.

Next month, Iran will stage massive military manoeuvres of its own, to show that it is prepared to defend its nuclear installations against the threat of aerial bombardment.

The exercise is being showcased as the biggest air defence war game in the Islamic Republic’s history, and will be its most visible response yet to the prospect of an Israeli military strike.

Using surface-to-air missiles, unmanned drones and state-of-the-art radar, Iran’s Revolutionary Guards and air force will combine to test the defences of 3,600 sensitive locations throughout the country, including oil refineries and uranium enrichment facilities.

Brigadier General Farzad Esmaili, commander of the Khatam al-Anbiya air defence base, told a conference this month that the manoeuvres would “identify vulnerabilities, try out new tactics and practise old ones”.

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One defence source told The Sunday Telegraph last night: “If it came to war, there would be carnage. The Iranian casualties would be huge but they would be able to inflict severe blows against the US and British.

“The Iranian Republican Guard are well versed in asymmetrical warfare and would use swarm attacks to sink or seriously damage ships. This is a conflict nobody wants, but the rhetoric from Israel is unrelenting.”

"[T]he rhetoric from Israel"? They face an existential threat--I don't think it is rhetoric.

The Iranian exercises may provide an interesting window of opportunity--either during the confusion of the exercises (can Iran manage all of its aircraft?) or immediately afterward when its military crews are tired, and stores have been depleted.