In a show of 'unmitigated patriotism', he even attacked the US in front of one of the country's ambassadors, claiming 'the Americans don't understand geography.
The disclosure was made by the whistle blowing website Wikileaks and now raises questions about Andrew's future in his role as a government trade representative. There have been calls for him to quit.
Buckingham Palace aides last night admitted the Duke would be embarrassed by his choice language and manner but defended him for 'banging the drum for British industry'.
The leaks have plunged America into an unprecedented diplomatic crisis as its astonishing secret verdicts on Britain and other countries around the world are exposed.