Go ask the German government. It was their incessant demands for "cost reducing" redesigns that have given us the plane 10 years late, more expensive and less capable than it should be! Because we wanted to be seen as good Europeans we didn't just kick them off the programme. That and we thought the loss of their 200-odd airframes would drive the cost up prohibitively. Turns out it would have been cheaper in the long run. Even now the Germans are at it, they want all their planes NOW, straightaway, but they don't want to pay for them till 2012......
As for the French, they wanted all design, testing, production and sales to be based in France, with French leadership of the project. They never quite got the "co-operation" bit, so we never allowed them on board.
Oh, and there is talk of Tiffies in Afghanistan next year, they will also go to the Falklands in the next 12 months.