Interesting, you really wonder why mid-level states like Argentina, heck most of Latin America, Africa and Asia for that matter really need fighter jets.
Who are they war gaming against (let's assume the Falklands are out of the equation)?
One sees the same thing in SE Asia as countries like Indonesia buy submarines, seriously? The only people you are likely to fight with submarines or jet fighters have much bigger, faster, more advanced and better armed toys in their box than you will ever have, and a hell of a lot more of them, so why bother?
Are these vanity projects or are there serious situations envisaged in which they would ever be used?