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British naval exercise in Gulf to protect shipping routes

With pressure on energy supplies, protecting shipping routes from the Middle East is becoming increasingly important.

The Royal Navy is currently at the forefront of a major exercise in the Gulf involving 41 nations to counter any threat.

They are rehearsing what would happen if mines were laid in international shipping lanes, like the Strait of Hormuz, which Iran has threatened to block in the past.

Correspondent Emma Murphy reports: