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Interesting, Parsifal that you mention the Collins Class subs; again, the problems with those are as much to do with the fact that the Aussies had theirs modified from the original design, when, if they'd just bought off-the-shelf they might not have had the same issues.
Without a major war nations aren't willing to pay $100 million plus for a single fighter aircraft. The future belongs to aircraft like the Gripen which combine decent performance with an affordable price tag.
French were as perfidious as any major power (at least they saw themselves back then) - in case they saw it fit, they were quick to discard the law(s) obliging them with a minor country.
As for the Rafale - any modern aircraft is hugely expensive (French are probably kicking themselves for not making a single engined combat jet in lieu of the Rafale); foreign governments have less and less money (those that have, buy Russian or US hardware), the sell of aircraft is much more a thing of belonging together with a major power than about 'bang-for-buck'; and indeed the past dealings of the firm's Government weren't many times a good record.
Plenty of twin engine carrier machines too.
I bet given western aircraft to Yugoslavia had no political motive at all.
Drive a wedge between Belgrade and Moscow?
The Rafale does look a dumb idea in hindsight. The Eurofighter was between 4 partners who shared risk and would mean a larger sales base. Rafale would be made and bought by one country and sales would be pot luck.
Oops.
Argentina only bought the Etendard because America had embargoed spares for the Skyhawks. So Americs like France was using spares and technical assistance as a game of political expediency.