Etihad Airways, the national airline of the United Arab Emirates, today announced it was buying 10 more Boeing 787-9 Dream-liners in a deal which will make it the largest operator of this type of aircraft in the world. The airline said it has also ordered another two Boeing 777 Freighters for its fast growing Etihad Crystal Cargo operation. The 12 additional aircraft are valued at $2.8 billion at current list prices, according to a press release of Etihad quoted by the UAE news agency "WAM".