Dan Sabbagh, the Guardian’s defence and security editor, writes:
If there was a moment when the absence of a US strategy on Iran was exposed, then this was it. Donald Trump demanded on Saturday that the UK, China, France, Japan and others participate in a naval escort for oil tankers through the strait of Hormuz.
Despite launching the attack on Iran, with Israel, the White House does not seem to have fully anticipated what was likely to follow. Iran had few good military options for fighting back, but attacking US bases, US allies and merchant shipping in the Gulf was the most obvious response – to try to impose costs on the west.
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Trump, fixated on military power, had no particular desire to work with any country other than Israel – and none wanted to join in starting a war against Iran. As a result, naval preparation by US allies before the start of the war was nonexistent. None of Britain, France, China and Japan had warships ready to take up convoy duties.
For any escort operation to be viable, it might require eight to 10 destroyers, according to Richard Meade, the editor-in-chief of Lloyd’s List, though that would be enough to protect only “five to 10 vessels, making a transit every day and a half”. That would amount to about 10% of prewar shipping volumes.