I've just gone and had a look at the reviews for that - sounds brilliant.

http://www.amazon.co.uk/Operation-Red-Jericho-Guild-Speciali...

Can't find a reference to The Ambassadors, but maybe that just doesn't turn up in the reviews.

Thanks for the pointer.

Edit: Found it - it's mentioned here:

http://goodtoread.org/initial/o/operation-red-jericho/

Great review.