Iranian state-run TV has broadcast video it says shows a controversial naval standoff between Revolutionary Guards patrols and US warships.

There is no sign of threatening behaviour by the Iranian boats, as alleged by US officials who said their actions were dangerous and provocative.

However, the four-minute clip does not appear to show the whole incident in the Strait of Hormuz on Sunday.

Iran accuses the US of faking video and audio evidence to support its claims.

"Coalition warship number 73 this is an Iranian patrol," the Iranian commander is heard to say in clear English in the footage, broadcast on Iran's English-language Press TV .

"This is coalition warship number 73. I am operating in international waters," comes the reply.

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