Easy, don't have the US place an embargo on the export of the Viggens J8TD derived engine. The Viggen offered in competition with the F16, F1E and others was based on the JA37, 2nd generation plane. This had the best radar and electronic performance of all the competitors, STOL capability, outright performance as good as any others and a very competitive cost. But the US, frightened of losing such a valuable, competition placed an embargo on the export of the engine which was derived from the ubiquitious JT8D airliner turbofan.____________ The embargo is not placed, it is purchased widely throughout NATO, Italy sends some to Iraq in 1990-1, others see action in the Balkans in the 1990s.